Welcome to the Hidden Expedition: Smithsonian Castle Walkthrough

The Smithsonian Castle’s secrets lie in a Civil War past.

Whether you use this document as a reference when things get difficult or as a road map to get you from beginning to end, we’re pretty sure you’ll find what you’re looking for here.

This document contains a complete Hidden Expedition: Smithsonian Castle game walkthrough featuring annotated screenshots from actual gameplay!

We hope you find this information useful as you play your way through the game. Use the walkthrough menu below to quickly jump to whatever stage of the game you need help with.

Remember to visit the Big Fish Games Forums if you find you need more help. Have fun!

This walkthrough was created by David Becker, and is protected under US Copyright laws. Any unauthorized use, including re-publication in whole or in part, without permission, is strictly prohibited.

Walkthrough Menu

General Tips

  • This is the official guide for Hidden Expedition: Smithsonian Castle.
  • Hidden-object puzzles are referred to as HOPs. This guide will not show screenshots of the HOPs, however, it will mention when an HOP is available and the inventory item you’ll collect from it.
  • This guide will not mention each time you have to zoom into a location; the screenshots will show each zoom scene.

Chapter 1: The Smithsonian Castle

Hidden Expedition: Smithsonian Castle
  • Take the SMITHSONIAN SUN EMBLEM (A).
  • Move 2 items; take the COCKTAIL STIRRER (B).
  • Place the SMITHSONIAN SUN EMBLEM (C).
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution: (D).
  • Move forward twice.
Hidden Expedition: Smithsonian Castle
  • Take the PORTABLE VAULT (E).
  • Pan down and remove the pillows; take the EMPTY LIGHTER (F) and DIMMER KNOB (G).
  • Use the COCKTAIL STIRRER (H).
Hidden Expedition: Smithsonian Castle
  • Take the fact card (I) and 2 BUTTERFLY WINGS (green).
  • Move the books (J); take BUTTERFLY WING 3/3 (K).
  • Open the PORTABLE VAULT (L); take the USB ENCRYPTION KEY (M).
Hidden Expedition: Smithsonian Castle
  • Place the USB ENCRYPTION KEY (N); inspect the monitor.
  • Move the slider into the correct position (O); activate panels 1-3.
  • Select the footage (P); push the button five times (Q).
  • Activate the button (R); take the SUSPECT PHOTO (S).
Hidden Expedition: Smithsonian Castle
  • Move the note; take PLANET 1/2 (T).
  • Walk down.
  • Insert the SUSPECT PHOTO (U).
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution: 1-3.
  • Take the PERSONAL CODE (V).
Hidden Expedition: Smithsonian Castle
  • Turn the shelf (W); play the HOP (green) to acquire the SMITHSONIAN BOOKLET.
  • Open the SMITHSONIAN BOOKLET; take the map (X).
  • Turn a page; take PLANET 2/2 (Y).
  • Place 3 BUTTERFLY WINGS (Z).
Hidden Expedition: Smithsonian Castle
  • Take the fact card (A) and GLASS SHARD 1/4 (B).
  • Turn left.
  • Place 2 PLANETS (C).
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution: 1-2.
Hidden Expedition: Smithsonian Castle
  • Place the DIMMER KNOB (D); turn it.
  • Play the HOP (E) to receive GLASS SHARD 2/4.
  • Go upstairs.
  • Push stones 1-6; take the note (blue) and SHELLS (purple).
  • Walk down twice.
Hidden Expedition: Smithsonian Castle
  • Place the SHELLS (F).
  • Assemble the symbols correctly (G).
  • Take the ARROW (H).
  • Move forward.
  • Place the ARROW (I).
  • Turn right.
Hidden Expedition: Smithsonian Castle
  • Move the photo and note; place the PERSONAL CODE (J).
  • Enter the code 265; take the HAIR BAND (K) and NAIL FILE (L).
  • Move the sponge; take the TILES (M).
  • Take the fact card (N).
  • Walk down twice.
Hidden Expedition: Smithsonian Castle
  • Place the TILES (O).
  • Play the mini-game.
  • Solution: Px4-Qx5-Rx2.
  • Move the item; take the OWL SYMBOL (S).
  • Go to the Archive.
Hidden Expedition: Smithsonian Castle
  • Place the OWL SYMBOL (T).
  • Play the HOP (U) to receive the SMITHSONIAN SIGNET RING.
  • Use the SMITHSONIAN SIGNET RING (V).
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution: (W).
  • Take the OLD LETTER (X).
Hidden Expedition: Smithsonian Castle
  • Place the OLD LETTER (Y).
  • Play the mini-game.
  • Solution: (Z).
  • Take the BOOK CARD (A).
Hidden Expedition: Smithsonian Castle
  • Pan right; use the BOOK CARD (purple) to acquire the EMPLOYEE YEARBOOK.
  • Open the EMPLOYEE YEARBOOK; turn two pages.
  • Take GLASS SHARD 3/4 (B).
  • Walk down.
  • Open the door at the correct moment (C).
Hidden Expedition: Smithsonian Castle
  • Take the PENDANT (D) and GLASS SHARD 4/4 (E).
  • Pan up and place 4 GLASS SHARDS (F); pan down.
  • Take the ORNATE BOX (G).
Hidden Expedition: Smithsonian Castle
  • Open the ORNATE BOX; arrange the tower correctly (H).
  • Take the SOUTH TOWER ORNAMENT.
  • Go to the Tower Entrance.
  • Place the SOUTH TOWER ORNAMENT (I); push it.
  • Move forward.

Chapter 2: The Tower

Hidden Expedition: Smithsonian Castle
  • Play the HOP (J) to receive the TRAPDOOR DECORATION.
  • Remove the cloak; take the BROKEN BRACELET (K) and WOODEN TILE 1/2 (L).
  • Place the TRAPDOOR DECORATION (M); open the trapdoor.
  • Go down.
Hidden Expedition: Smithsonian Castle
  • Use the NAIL FILE (N); open the bag.
  • Take the CAN OF LIGHTER FLUID (O).
  • Take the fact card (P) and SMITHSONIAN SEAL (Q).
  • Remove a page; take WOODEN TILE 2/2 (R).
  • Open the drawer; take CLOCK HAND 1/2 (S).
Hidden Expedition: Smithsonian Castle
  • Open the EMPTY LIGHTER; pour the CAN OF LIGHTER FLUID into it and light it up (T) to acquire the LIGHTER.
  • Connect the PENDANT to the BROKEN BRACELET (U) to acquire SARAH’S BRACELET.
  • Turn around the SMITHSONIAN SEAL; remove three pieces (green) to acquire the CLOCK FACE.
  • Turn right.
Hidden Expedition: Smithsonian Castle
  • Take the LABEL (V); open the door.
  • Place the CLOCK FACE (W).
  • Take the SILVER LEAF (X).
Hidden Expedition: Smithsonian Castle
  • Take the fact card (Y).
  • Walk down.
  • Place the SILVER LEAF (Z).
  • Open the door.
Hidden Expedition: Smithsonian Castle
  • Take the fact card (A); open the cupboard and box.
  • Take the MECHANICAL DIVIDER (B); place the HAIR BAND (C) to receive the BRUSH.
  • Place the LABEL (D); take the FILE ENVELOPE (E).
Hidden Expedition: Smithsonian Castle
  • Take the scroll case (F); place 2 WOODEN TILES (G).
  • Arrange the tiles correctly (H).
  • Move the photo; take MONKEY FIGURINE 1/2 (I).
  • Walk down, turn right.
Hidden Expedition: Smithsonian Castle
  • Open the FILE ENVELOPE (J); turn it around to acquire CLOCK HAND 2/2.
  • Place 2 CLOCK HANDS (K); enter the correct time (L).
  • Take MONKEY FIGURINE 2/2 (M).
  • Walk down.
Hidden Expedition: Smithsonian Castle
  • Place 2 MONKEY FIGURINES (N); take the BISHOP CHESS PIECE (O).
  • Turn right.
  • Give the BISHOP CHESS PIECE to the man (P).
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution: Q-R-Q-S-T-S.
  • Take the SPEAKING TUBE (U).
Hidden Expedition: Smithsonian Castle
  • Place the SPEAKING TUBE (V).
  • Play the mini-game.
  • Solution part 1: X-Wx3-Xx3.
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution part 2: (Y).
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution part 3: (Z).
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution part 4: (A).
Hidden Expedition: Smithsonian Castle
  • Read the note (B); take the MECHANICAL ACTIVATOR (C).
  • Take the MEGATHERIUM BADGE (E), EAGLE SIGN (D), and BOTTLE DECOR (F).
  • Walk down.
Hidden Expedition: Smithsonian Castle
  • Place the EAGLE SIGN (G); take the HOT AIR BALLOON SIGN (H).
  • Place the BOTTLE DECOR (I).
  • Remove 2 bottles; collect 3 CATALOG CARDS (green).
  • Move forward.
Hidden Expedition: Smithsonian Castle
  • Move 2 books; place the HOT AIR BALLOON SIGN (J).
  • Take CADUCEUS 1/2 (K) and the MINIATURE PENCIL (L).
  • Go to the Archive.
Hidden Expedition: Smithsonian Castle
  • Place 3 CATALOG CARDS (M).
  • Play the mini-game.
  • Solution: (N).
  • Take the ANIMAL MOTIF (1).
  • Go to the Regent’s Room.
Hidden Expedition: Smithsonian Castle
  • Place the ANIMAL MOTIF (O).
  • Remove the photo; take the MECHANICAL CALIPERS (P).
  • Place the MECHANICAL DIVIDER, MINIATURE PENCIL, and MECHANICAL CALIPERS on the MECHANICAL ACTIVATOR (Q) to acquire the ACTIVATOR.
  • Walk down.
Hidden Expedition: Smithsonian Castle
  • Place the ACTIVATOR (R).
  • Play the mini-game.
  • Solution: V-left, U-left, T-left, S-left, T-left, V-left, S-left, T-left, V-centre, U-centre, T-centre, S-centre, T-centre, U-centre, S-right, T-right, V-right, S-right, T-right.
  • Turn right.

Chapter 3: The Lecture Hall

Hidden Expedition: Smithsonian Castle
  • Take the fact card (W); open the drawer.
  • Take the note (X), BROKEN PLAQUE PIECE (Y), and QUARTZITE FLINT (Z).
  • Turn right.
Hidden Expedition: Smithsonian Castle
  • Use the LIGHTER (A).
  • Open 3 curtains (green).
Hidden Expedition: Smithsonian Castle
  • Play the HOP (B) to acquire the MORTARBOARD.
  • Use the BRUSH (C).
Hidden Expedition: Smithsonian Castle
  • Take the PLAQUE HALF (E).
  • Walk down.
  • Open the bag; take the note (F) and STEEL COMB (G).
  • Place the MORTARBOARD (H); take the GLASS ROD (I).
  • Turn left.
Hidden Expedition: Smithsonian Castle
  • Apply the STEEL COMB to the QUARTZITE FLINT (J) to acquire the FLINT AND STEEL.
  • Take 2 notes (K) and (M) and the OLD PHOTOGRAPH 1/3 (L).
  • Place the GLASS ROD (N) to acquire the ELECTRIFIED ROD.
Hidden Expedition: Smithsonian Castle
  • Take CADUCEUS 2/2 (O).
  • Open the compartment; place the FLINT AND STEEL (P).
  • Take the fact card (Q) and WEATHERVANE TOP (R).
  • Go to the Gallery.
Hidden Expedition: Smithsonian Castle
  • Place the CADUCEUS (S); open the box.
  • Take the BRASS FLOWER (T) and CANVAS (U).
  • Use the ELECTRIFIED ROD (purple); take the PAPER PIECES (V).
Hidden Expedition: Smithsonian Castle
  • Collect the RESIN IN PLATE with the WEATHERVANE TOP (W).
  • Assemble the PAPER PIECES correctly (X) to acquire the OSCILLATOR PLANS.
  • Walk down.
  • Place the BRASS FLOWER (Y); take the LADIES’ FAN (Z).
  • Turn left.
Hidden Expedition: Smithsonian Castle
  • Place the OSCILLATOR PLANS (A).
  • Use the LADIES’ FAN and RESIN IN PLATE (B); take the LIQUID RESIN (C).
  • Apply the LIQUID RESIN and PLAQUE HALF to the BROKEN PLAQUE PIECE (D) to acquire the PLAQUE.
  • Walk down.
Hidden Expedition: Smithsonian Castle
  • Place the PLAQUE (E); take the COPPER CYLINDER (F).
  • Turn left.
  • Place the COPPER CYLINDER (G), spring (green), and 2 parts (purple).
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution: (H).
  • Turn left.
Hidden Expedition: Smithsonian Castle
  • Use the CANVAS (I); take the note (J) and WOODEN TEA SET 1/2 (K).
  • Take the OIL CAN (L).
Hidden Expedition: Smithsonian Castle
  • Take the fact card (M); place the MEGATHERIUM BADGE (N).
  • Take the CHALK (O).
  • Turn right.
  • Talk to the man (P).
Hidden Expedition: Smithsonian Castle
  • Move the curtain (Q).
  • Remove the note; place SARAH’S BRACELET (R).
  • Take the MUSIC BOX (S), WOODEN BOX DECORATION (T), and FORCEPS (U).
Hidden Expedition: Smithsonian Castle
  • Play the HOP (V) to acquire the ATLAS FIGURINE.
  • Use the OIL CAN (W); take the WOODEN WHEEL.
  • Walk down.
  • Place the ATLAS FIGURINE (X) and WOODEN WHEEL (Y).
Hidden Expedition: Smithsonian Castle
  • Move the cart (Z).
  • Enter the Chemistry Laboratory.
  • Play the HOP (A) to acquire the SMALL WEIGHT.
  • Move the note; collect the ROLLER HANDLE with the FORCEPS (B).

Chapter 4: Helen’s Laboratory

Hidden Expedition: Smithsonian Castle
  • Take the fact card (C); place the WOODEN BOX DECORATION (D).
  • Assemble the stethoscope; take the STETHOSCOPE (E).
  • Take OLD PHOTOGRAPH 2/2 (F).
  • Move forward.
  • Talk to Helen (G).
Hidden Expedition: Smithsonian Castle
  • Use the CHALK (H); move the model to the board (purple) and adjust it twice.
  • Take MOLECULAR MODEL 1/2 (I).
  • Place the ROLLER HANDLE (J).
Hidden Expedition: Smithsonian Castle
  • Take the BELLOWS (L).
  • Place the SMALL WEIGHT (M); take the SHOWCASE INLAY (N).
  • Walk down.
  • Take MOLECULAR MODEL 2/2 (O).
  • Walk down.
Hidden Expedition: Smithsonian Castle
  • Place the SHOWCASE INLAY (P).
  • Play the HOP (Q) to acquire the DECORATED CHEST.
  • Place 2 MOLECULAR MODELS on the DECORATED CHEST (R); take the ELEMENTS LIST (S).
  • Move forward.
Hidden Expedition: Smithsonian Castle
  • Place the ELEMENTS LIST (T).
  • Play the mini-game.
  • Solution: (U).
  • Take WOODEN TEA SET 2/2 (V).
  • Go to Helen’s Residence.
Hidden Expedition: Smithsonian Castle
  • Place 2 WOODEN TEA SETS (W); take the LOCKBOX DRAWING (X).
  • Go to Helen’s Laboratory.
  • Place the LOCKBOX DRAWING (Y).
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution: B-C-B-D-B-Z-B-A.
  • Take the NATURAL HISTORY KEY (1).
  • Go to the Cloister.
Hidden Expedition: Smithsonian Castle
  • Insert the NATURAL HISTORY KEY (E).
  • Enter the Natural History Laboratory.
  • Push the bird figure (F).
  • Take the TRIANGLE (G); open the compartment.
  • Take the fact card (green).
Hidden Expedition: Smithsonian Castle
  • Play the HOP (H) to acquire the HUMMINGBIRD.
  • Take the note (I) and OLD PHOTOGRAPH 3/3 (J); open the compartment.
  • Walk down.
  • Place the OLD PHOTOGRAPH (K); activate 3 windows (purple).
  • Take the WOODEN DECOR (L).
  • Enter the Natural History Laboratory.
Hidden Expedition: Smithsonian Castle
  • Place the WOODEN DECOR (M).
  • Move forward.
  • Open the shelf; take the MUSHROOM GLOVE (N).
  • Place the HUMMINGBIRD (O).
  • Walk down.
Hidden Expedition: Smithsonian Castle
  • Use the MUSHROOM GLOVE (P); take the BOOK PATTERN (Q).
  • Walk down.
  • Place the BOOK PATTERN (R); take the COG (S).
  • Go to the Meeting Room.
Hidden Expedition: Smithsonian Castle
  • Place the COG (T).
  • Play the mini-game.
  • Solution: U-V-U-X-U-V-U-X-Wx2-V-Wx3-V-U-X-U-X-W-V-U-V-W-V-U-Xx2-Ux2-Vx2-U-X-W-X-W-V.
  • Take the LETTER L (green) and SHELL FOSSIL (purple).
  • Walk down.
Hidden Expedition: Smithsonian Castle
  • Place the SHELL FOSSIL (Y).
  • Move 3 items; take the REGISTRY PLATE (Z).
  • Move forward.
  • Place the REGISTRY PLATE (A).
  • Enter the Registry.
Hidden Expedition: Smithsonian Castle
  • Move the panel (B).
  • Place the LETTER L (C).
  • Place the STETHOSCOPE (D); turn it four times.
  • Play the HOP (E) to acquire the MAGNET.
Hidden Expedition: Smithsonian Castle
  • Take the note (blue); place the TRIANGLE (F).
  • Take the MECHANICAL WING (G).
  • Move forward.
  • Take the H.E.L.P. CREST (I); move 3 parts (purple).
  • Take the LEATHER STRING (H).
Hidden Expedition: Smithsonian Castle
  • Pull the compartment; take the fact card (J).
  • Use the MAGNET (K) to acquire the SMALL CANNON.
  • Pan right; pull the compartment.
  • Use the MAGNET (L) to acquire the WIND-UP KEY.
  • Use the BELLOWS (M); take ATLANTIS PART 1/3 (purple) and the HOSE (green).
  • Walk down.
Hidden Expedition: Smithsonian Castle
  • Place the SMALL CANNON (O).
  • Place the HOSE and LEATHER STRING (P); turn the valve (Q).
  • Take the fact card (R) and LEATHER TUBE (blue).
  • Open the LEATHER TUBE; take the QUILL (S).
  • Enter the Inventions Room.
Hidden Expedition: Smithsonian Castle
  • Use the MUSIC BOX (T); take SARAH’S SONG (U).
  • Take the STONE SLAB (V).
  • Place the WIND-UP KEY and MECHANICAL WING (green); take the INSECT (W).
  • Go to the Repository.
Hidden Expedition: Smithsonian Castle
  • Use the INSECT (X) to acquire the VALVE (Y).
  • Place the VALVE (Z); turn it.
  • Play the HOP (A) to acquire the SHELL.
  • Open the SHELL.
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution: (B).
  • You receive the PEARL and SHARP SHELL.
  • Go to the Inventions Room.
Hidden Expedition: Smithsonian Castle
  • Use the SHARP SHELL (D) and open the box; take ATLANTIS PART 2/3 (E) and the INK BOTTLE (F).
  • Take the fact card (purple); use the QUILL (1).
  • Pan up; use the INK BOTTLE (G).
  • Take the SYMBOLS (H).
  • Place the PEARL (I).
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution: K-up, K-right, J-up, L-left, N-left, M-left, P-down, O-right, J-up, K-left, O-down, J-right, K-up, K-right, Q-down, R-left, S-left, J-up.
  • Take the SPHERE (T).
  • Go to the Meeting Room.
Hidden Expedition: Smithsonian Castle
  • Place the SYMBOLS on the SPHERE (U); choose 5 symbols (green).
  • Take the BOOK SYMBOL (V).
  • Place the BOOK SYMBOL (W).
  • Enter the Library.

Chapter 5: The Library

Hidden Expedition: Smithsonian Castle
  • Move the books; take the fact card (orange).
  • Place the H.E.L.P. CREST (X).
  • Take the GLASS ADORNMENT (Y) and GLUE (Z).
  • Move forward.
Hidden Expedition: Smithsonian Castle
  • Take the SCEPTER (A) and fact card (green); place the STONE SLAB (B).
  • Take the COLORED LENS (C) and TICKER TAPE (D).
Hidden Expedition: Smithsonian Castle
  • Take the WEDGE (E).
  • Walk down.
  • Place the SCEPTER (F).
Hidden Expedition: Smithsonian Castle
  • Play the HOP (G) to receive NEPTUNE’S SYMBOL.
  • Move forward.
  • Place NEPTUNE’S SYMBOL (H); take the CODED CYLINDER (I).
  • Walk down.
Hidden Expedition: Smithsonian Castle
  • Place the COLORED LENS and CODED CYLINDER (J).
  • Enter the correct symbols (K); take ATLANTIS PART 3/3 (L).
  • Move forward.
  • Place 3 ATLANTIS PARTS (M); take the INSTRUCTIONS (N).
  • You acquire THOMAS’ LEDGER.
Hidden Expedition: Smithsonian Castle
  • Place the INSTRUCTIONS on the GLASS ADORNMENT (O); push symbols 1-4.
  • You receive the DOLPHIN.
  • Place the DOLPHIN (Q).
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution: Rx2-S-Rx2-S-Rx6-S-R..
  • Take the ACID (T) and VAULT SYMBOL (U).
  • Go to the Meeting Room.
Hidden Expedition: Smithsonian Castle
  • Place the VAULT SYMBOL (V).
  • Enter the Vault.
  • Take the HOOK (W) and FOX FIGURINE (purple).
  • Use the ACID (X).
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution: (Y).
Hidden Expedition: Smithsonian Castle
  • Turn the valve (Z).
  • Place the WEDGE (A); turn the valve (B).
  • Open the chest; take the CHAIN (C).
Hidden Expedition: Smithsonian Castle
  • Place the CHAIN on the HOOK (D) to acquire the GRAPPLING HOOK.
  • Throw the GRAPPLING HOOK (E); remove 5 obstacles to move forward (1).
  • Give THOMAS’ LEDGER to the woman (F); take the TABLET (G).
Hidden Expedition: Smithsonian Castle
  • Take the fact card (H).
  • Move four papers; take the IVORY PIN (I).
  • Take the KITE PLANS (J).
  • Turn left.
Hidden Expedition: Smithsonian Castle
  • Pull the paper (K).
  • Use the GLUE (L); collect 4 pieces (green).
  • Take DEER 1/2 (M) and BIRD 1/2 (N).
Hidden Expedition: Smithsonian Castle
  • Play the HOP (O) to acquire the JUMBLED NAMEPLATE.
  • Place the FOX FIGURINE (P); take the ELBAITE MINERAL (Q).
  • Assemble the JUMBLED NAMEPLATE correctly (R); you acquire the NAMEPLATE.
Hidden Expedition: Smithsonian Castle
  • Take the fact card (S) and FISH FIN (T).
  • Walk down.
  • Place the NAMEPLATE (U); take the KYANITE MINERAL (V).
  • Enter the Janitor’s Quarters.
Hidden Expedition: Smithsonian Castle
  • Place the FISH FIN (W); take DEER 2/2 (X).
  • Place the DEER (Y).
  • Remove 2 items; take the DOOR INLAY (Z).
Hidden Expedition: Smithsonian Castle
  • Use the IVORY PIN (A); take BIRD 2/2 (B).
  • Walk down.
  • Place 2 BIRDS (C).
Hidden Expedition: Smithsonian Castle
  • Arrange the birds correctly (D); take the OLIVE BRANCH (E).
  • Place the DOOR INLAY (F).
  • Enter the Circular Office.

Chapter 6: The Circular Office

Hidden Expedition: Smithsonian Castle
  • Play the HOP (G) to receive the TURPENTINE.
  • Place the TICKER TAPE (H); take the LIBRARY CODE (I).
  • Place the OLIVE BRANCH (J); take the AZURITE MINERAL (K).
  • Pan right and open the box; take the MATCH CASE (L).
Hidden Expedition: Smithsonian Castle
  • Take the STEEL BUTTON HOOK (M).
  • Place the AZURITE MINERAL (purple), ELBAITE MINERAL (green), and KYANITE MINERAL (blue).
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Match pairs of crystals: 1-10.
  • Turn right.
Hidden Expedition: Smithsonian Castle
  • Give SARAH’S SONG to the woman (N).
  • Play the HOP (O) to acquire the CREST STAMP.
Hidden Expedition: Smithsonian Castle
  • Take the fact card (P) and WOLF FIGURINE (Q).
  • Use the STEEL BUTTON HOOK (R) to acquire STAINED GLASS PIECE 1/3.
  • Go to the Librarian’s Study.
  • Place the LIBRARY CODE (S); take the METEOROLOGY CREST (T).
Hidden Expedition: Smithsonian Castle
  • Pan right and place the WOLF FIGURINE (U); take SEAL STAMP (V) and COPPER SEAL (W).
  • Place the COPPER SEAL on the MATCH CASE (X); take the IRON KEY (Y).
  • Go to the Janitor’s Quarters.
Hidden Expedition: Smithsonian Castle
  • Place the CREST STAMP on the METEOROLOGY CREST (Z).
  • Assemble the symbols correctly (purple); take STAINED GLASS PIECE 2/3 (A).
  • Use the TURPENTINE (B); take the TYPEWRITER KEYS (C).
  • Go to the Mineralogy Storage.
Hidden Expedition: Smithsonian Castle
  • Place the SEAL STAMP (D); take the CANDLE WAX (E).
  • Walk down.
  • Clean the chest with the CANDLE WAX (F).
  • Move the chest (green).
  • Turn left.
Hidden Expedition: Smithsonian Castle
  • Take the fact card (G).
  • Go upstairs.
  • Turn the telescope (H); place the TYPEWRITER KEYS (I).
Hidden Expedition: Smithsonian Castle
  • Take the JEWELED SUN (J).
  • Place the JEWELED SUN on the MATCH CASE (K); take STAINED GLASS PIECE 3/3 (L).
  • Take the note (N) and NUTCRACKER (M).
  • Walk down.
Hidden Expedition: Smithsonian Castle
  • Place 3 STAINED GLASS PIECES (O).
  • Play the mini-game.
  • Move the token (P): Right-right-right-left-down-down-right-right-right-right.
  • You acquire the LANTERN COVER.
  • Go upstairs.
Hidden Expedition: Smithsonian Castle
  • Place the LANTERN COVER (Q).
  • Push the compartment (R); take the CREST PART (S).
  • Place the CREST PART on the METEOROLOGY CREST (T); take the METEOROLOGY EMBLEM (U).
  • Walk down.
Hidden Expedition: Smithsonian Castle
  • Place the METEOROLOGY EMBLEM (V); take the TELESCOPE EYEPIECE (W).
  • Go upstairs.
  • Place the TELESCOPE EYEPIECE (X).
Hidden Expedition: Smithsonian Castle
  • Play the HOP (Y).
  • Take the WIND VELOCITY RESULTS (Z).
  • Go to the Librarian’s Study.
  • Place the NUTCRACKER (A); turn the valve three times.
  • Take the GENTLEMAN’S CANE (B).
  • Go to the Flag Tower Entrance.
Hidden Expedition: Smithsonian Castle
  • Collect the PUNCH CARD with the GENTLEMAN’S CANE (C).
  • Go upstairs.
  • Place the PUNCH CARD (D); take the PRESSURE GAUGE (E).
  • Move forward.
Hidden Expedition: Smithsonian Castle
  • Place the WIND VELOCITY RESULTS (F) and PRESSURE GAUGE (G).
  • Place the IRON KEY and KITE PLANS (H).
Hidden Expedition: Smithsonian Castle
  • Play the mini-game.
  • Solution: 1-3-2-3-4-5-6-3-4-5-3-7-8.

Hidden Expedition: Smithsonian Castle
Hidden Expedition: Smithsonian Castle

  • Play the mini-game.
  • Move the kite (purple) to symbols 1-3.
  • Enter a four-digit password (I).
  • Give the TABLET to the man (J).
  • Congratulations, you have completed Hidden Expedition: Smithsonian Castle.

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