LEGO 10366 Tropical Aquarium is a Icons set currently available at retail for $479.99. Current new-sealed secondary market prices range from $500 to $745, with the average above MSRP at $517.

Forecast Model

This represents the expected annual growth (CAGR) based solely on a forecast model.
LEGO 10366 Tropical Aquarium is an Icons (Miscellaneous) set released in 2025, containing 4,154 pieces. The build depicts a large brick-built aquarium with a tank structure and tropical marine scenery. It focuses on detailed reef-style elements and brick-built sea creatures rather than minifigures. It features a detailed fish tank with four model fish, various plants and coral, sea worms, an oyster shell with a pearl, LEGO sea snails, air bubbles, and functional dials to animate moving fish, swaying coral, a crab, and a treasure chest.

Once retired, the expected annual growth will be close to 5% after the second year, valuing the set between $575 and $601 shortly after it is retired.

For Sale (New/Sealed)

This chart shows the sales listing trends of 10366 Tropical Aquarium.
(US) Icons Tropical Aquarium 10366 - Brand New Unopened Box
BrickEconomy Choice
$449.00
(US) Icons Tropical Aquarium [10366], NEW SEALED BOX 4154 pcs $449.95
-6.3%
(US) Icons Tropical Aquarium Set 10366 - 100% Verified Authentic and New $452.00
-5.8%
(US) Icons Tropical Aquarium Set 10366 - 100% Verified Authentic and New $455.00
-5.2%
(US) New Sealed LEGO Icons 10366 Tropical Aquarium Set 4154Pcs On Hand Ship DoubleBox $476.99
-0.6%
(US) Official LEGO Tropical Aquarium $479.99
(NL) BrickLink store BRICKSHOP Holland $481.15
+0.2%
(FR) BrickLink store Tim_shop $499.71
+4.1%
(US) ICONS Tropical Aquarium (10366) - NEW FACTORY SEALED READY TO SHIP $499.99
+4.2%
(CA) New Sealed $508.06
+5.8%
(NO) BrickLink store Store from Norway $513.50
+7.0%
(CH) BrickLink store BeeToys $569.62
+18.7%
(US) BrickLink store Paw's Brick Yard $594.99
+24.0%
(KR) Icons Tropical Aquarium / #10366 / express / genuine $597.08
+24.4%
Show 11 more listings

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Dive into an immersive project with the LEGO Icons Tropical Aquarium (10366) fish tank decor building set for adults. Craft a detailed LEGO interpretation of a vibrant underwater world, teeming with life and striking colors. Arrange each feature for the perfect look and display your creation in the home or workplace for all to enjoy.

This home decor aquarium comes with fun functions. Rotate the dials and cranks to animate a swimming fish, swaying coral, a crab emerging from an underwater cave and an opening treasure chest. The aquarium includes 4 model fish and comes with a variety of plants and coral, sea worms and an oyster shell containing a pearl, plus LEGO sea snails and air bubbles.

Discover a space for relaxation with the inspiring range of LEGO creative building sets for adults. The LEGO Builder app features a digital version of the building instructions included with this DIY craft kit. Set includes 4,154 pieces.


Fish tank decor building kit Take quality...
Description provided by LEGO©