ExclusivesAges 18+

Tropical Aquarium (10366)

Name: Tropical Aquarium
Brand: LEGO
SKU: 10366
Rating: 4.2 (4 reviews)

LEGO.com RRP:

£399.99

LEGO.com

★4.2

(4 reviews)

🧱 4154 pieces - : £0.10

Available From

LEGO.comOfficial

£399.99

Price updated: 26 Apr 2026

View on LEGO →

Building Instructions Brickset

Price Analysis

Lowest Price Ever

£399.99

at LEGO.com · Jan 2026

Average Price (12mo)

£399.99

Current vs Average

0.0%

Near average

Price Trend

Stable

Last 30 days

Best Month to Buy

January

Value Score

9.0/10

Price-per-piece vs theme avg

The lowest price we've recorded for Tropical Aquarium is £399.99 at LEGO.com in January 2026. The current price is close to the 12-month average of £399.99. Historically, January tends to offer the best prices for this set.

Price History & Buying Verdict

VerdictNo strong signal yet

•On price-per-piece, this is one of the better-value sets in the LEGO® Icons range (value score 9.0/10 vs theme average).

We've been tracking the price of LEGO LEGO® Icons Tropical Aquarium (4,154 pieces) for 102 days, recording 9 data points across LEGO.com and major UK retailers. Over that period the price has dropped 0 times below previous levels, with the lowest price ever recorded being £399.99 at LEGO.com in January 2026.

The 12-month average sale price for set 10366 works out to £399.99 — that's 0% above the LEGO RRP of £399.99. The highest price we recorded across our tracked retailers was £399.99, giving a range of about £0.00 between the cheapest and most expensive observation.

Historically, January has produced the lowest average prices for Tropical Aquarium, so if you're not in a hurry it's worth bookmarking the page closer to that window.

Want to see how LEGO Tropical Aquarium (set 10366) compares against other sets? Browse the best-value LEGO sets or check the full price-history tracker.

Description

Tropical Aquarium (10366) is a LEGO LEGO® Icons set with 4,154 pieces, with an RRP of £399.99. Prices have been stable over the last 30 days. With a value score of 9.0/10, this set offers excellent value compared to other LEGO® Icons sets.

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 colours. 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, seaworms 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.

Features

Fish tank decor building kit – Take quality time out or treat a loved one with this LEGO® Icons Tropical Aquarium set for adults
What’s in the box – Includes everything you need to build a LEGO® fish tank with 4 fish and a variety of coral, water plants and creatures
Features and 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
Captivating home decor – Arrange each feature for the perfect look and display your creation in the home or workplace for all to enjoy
A fun Christmas or birthday gift – Treat yourself or gift a loved one with this LEGO® Icons Tropical Aquarium building project for adults and pet fish lovers
Includes digital building instructions – The LEGO® Builder app features a 3D digital version of the building instructions included with this LEGO fish tank aquarium construction set
LEGO® building sets for adults – Discover a space for relaxation with the inspiring range of LEGO building projects (sold separately) designed specifically for adults
Dimensions – The fish tank in this 4,154-piece LEGO® aquarium building set measures over 36 cm (14 in.) high, 52 cm (20.5 in.) wide and 28 cm (11 in.) deep

Frequently Asked Questions about Tropical Aquarium

What is the best price for LEGO Tropical Aquarium (Set 10366)?

LEGO Tropical Aquarium (Set #10366) is currently priced at £399.99 on LEGO.com. We continuously monitor prices across multiple UK retailers to find you the best deals.

How many pieces are in LEGO set 10366?

LEGO Tropical Aquarium (Set #10366) contains 4,154 pieces. At the LEGO.com price of £399.99, that works out to approximately 9.6p per piece.

What age is LEGO Tropical Aquarium suitable for?

LEGO Tropical Aquarium (Set #10366) is recommended for ages 18+. This set is part of the LEGO LEGO® Icons theme. View all LEGO® Icons sets and deals.

Where can I find the building instructions for LEGO Tropical Aquarium?

You can download the official building instructions for LEGO Tropical Aquarium (Set #10366) for free from LEGO.com. Download the building instructions here. The instructions are available as a PDF and can be viewed on any device.

Where can I buy LEGO Tropical Aquarium in the UK?

LEGO Tropical Aquarium (Set #10366) is available from LEGO.com at £399.99. We're monitoring other UK retailers for availability. Check our recent price drops for updates.

What is the lowest price ever recorded for LEGO Tropical Aquarium?

The lowest price we've recorded for LEGO Tropical Aquarium (Set #10366) is £399.99 at LEGO.com in January 2026. That's 0% off the LEGO RRP of £399.99. Track the latest movements on our LEGO price history page.

Is LEGO Tropical Aquarium being discontinued or retiring soon?

LEGO Tropical Aquarium is currently a LEGO Exclusive, which means it's only sold by LEGO and a small number of official partners. Exclusives typically have a longer retail life than mainline sets, but once retired they appreciate quickly on the secondary market. Browse our list of retiring LEGO sets to see what else is on the way out.

Is LEGO Tropical Aquarium good value for money?

Comparing piece-count to price across the LEGO LEGO® Icons theme, this set scores 9.0 / 10 for value. That works out to about 9.6p per piece. That puts Tropical Aquarium in the top tier of LEGO® Icons sets for raw build value — you're paying noticeably less per brick than the theme average. Compare against other contenders on our best-value LEGO sets page.