The world of LEGO keeps getting more creative — and this time, it’s going underwater. The brand-new LEGO Icons Tropical Aquarium (10366) has finally been unveiled, and it’s shaping up to be one of the most beautiful and artistic builds ever released by the company.
Designed for adults and collectors, this buildable aquarium is a mix of creativity, engineering, and tranquillity — a stunning display piece that captures the beauty of a coral reef without a single drop of water.
Here’s everything you need to know about the set — from its features and price to what makes it one of the most talked-about LEGO Icons releases of the year.
🐠 A Display Set That’s Pure Art
The Tropical Aquarium (set number 10366) is part of the LEGO Icons range — a collection aimed at adult builders who enjoy immersive, detailed builds with real-world charm.
This massive aquarium build features over 4,100 pieces and recreates a colourful coral reef environment inside a large, black-framed tank. Instead of glass panels and water, it’s a vibrant brick diorama filled with intricate coral, plants, and marine life.
The colour palette is stunning — think deep blues, oranges, pinks, greens, and yellows — perfectly capturing the lively energy of tropical waters.
🧩 What’s Inside the Set
The LEGO Tropical Aquarium 10366 includes:
Multiple tropical fish in different shapes and colours
Detailed coral and sea plants
A treasure chest that can open and close
A mechanical crab that moves in and out of its hiding place
Rotating dials that animate fish and coral movements
Small sea creatures like snails, oysters, and worms
Every part of the set is designed with subtle motion — rotating gears behind the display allow coral to sway and fish to “swim,” bringing the underwater world to life.
The mechanical features don’t require electricity or motors; instead, they’re powered by clever LEGO engineering.
💡 Design and Build Experience
This set is made for patient builders who love detail. Building it feels more like creating a sculpture than a toy. The process is broken into several stages — constructing the black base and frame first, then layering coral, plants, and marine animals inside the tank.
The background uses curved tiles and wave patterns to create a shimmering water effect. Once assembled, the aquarium stands around 36 cm tall and 52 cm wide, making it a substantial display piece that easily becomes the centre of attention on any shelf or desk.
LEGO has managed to make it both technical and relaxing — the build encourages mindfulness, patience, and focus, offering a peaceful alternative to the usual action-packed LEGO sets.
💰 Price and Release Date
The LEGO Icons Tropical Aquarium 10366 officially releases on 13 November 2025.
It’s priced at around AU$699.99 in Australia, which reflects its premium position as a collector’s display set rather than a play model.
For international comparison, it retails at US$479.99 in global markets.
During its launch week, LEGO fans can expect a special gift-with-purchase — a small side build called “Fish Tank Filter & Fish Food” for early buyers, available for a limited time only.
⚙️ Features That Make It Unique
What separates this aquarium from other display builds is its combination of realism and motion. Unlike static models, the Tropical Aquarium comes alive through its interactive elements:
Rotating coral branches mimic natural sea movement.
A hidden crab scuttles out from its burrow with a turn of a crank.
The treasure chest pops open as you rotate another dial.
Fish models gently move in circular patterns inside the tank.
Even though it’s made entirely from bricks, it somehow captures the calm, hypnotic quality of watching a real aquarium — minus the water changes and algae cleaning.
🧠 Who It’s For
This set is clearly designed for adult LEGO fans (ages 18+) who love slow, rewarding builds. It’s perfect for:
LEGO collectors looking for a statement piece
Nature or aquarium enthusiasts
Builders who enjoy mechanical, motion-based sets
Anyone after a mindful, screen-free creative experience
It’s also an excellent crossover gift for anyone who loves both art and engineering — think of it as the perfect blend of creativity and calm.
📦 The Pros and Cons
Pros:
Exceptional design and movement features
Beautiful colour palette and coral detailing
Relaxing, meditative build process
Eye-catching display piece
No water or maintenance required
Cons:
High price point may put it out of reach for casual fans
Large size means it needs a proper display area
Dust can build up over time since the tank is open
Very little traditional “play” value
But for LEGO Icons collectors, those are minor drawbacks compared to the artistic value and satisfaction of the build.
🌏 How It Compares to Other LEGO Sets
The LEGO Tropical Aquarium 10366 fits neatly beside other adult Icons sets such as the Orchid, Flower Bouquet, and Botanical Collection — all of which celebrate nature through brick art.
It’s larger and more dynamic than most botanical builds, offering mechanical movement and an environmental theme that appeals to nature lovers.
While smaller aquatic sets like The Coral Reef (Minecraft) or Sea Animals (Creator 3-in-1) capture the theme in miniature form, the Tropical Aquarium is truly a showpiece for serious collectors.
🙋♀️ People Also Ask (FAQs)
When does LEGO Tropical Aquarium 10366 release?
The set releases on 13 November 2025 worldwide.
How many pieces does it have?
It contains 4,154 pieces, making it one of LEGO’s most detailed nature-themed builds.
How much will it cost in Australia?
It retails for around AU$699.99.
Does it include moving features?
Yes. The fish, coral and a crab can move using mechanical gears built into the back.
Is the tank filled with water or transparent panels?
No, it’s a brick display — the open design creates the illusion of an aquarium without glass or water.
Who is it best suited for?
Adult builders and collectors who enjoy intricate, artistic LEGO builds.
✨ Conclusion
The LEGO Icons Tropical Aquarium 10366 is more than just a LEGO set — it’s an artistic statement. Combining engineering, beauty and mindfulness, it brings the tranquillity of the ocean into your home without the fuss of an actual tank.
With over 4,000 pieces, moving coral, vibrant marine life and a sleek black display frame, it’s a celebration of creativity that showcases LEGO’s evolution as a medium for design and expression.
Whether you’re a long-time LEGO fan or just someone who appreciates nature and art, this set delivers a truly rewarding build. It’s not cheap, but for what it offers — elegance, motion, and meditative satisfaction — it’s worth every brick.
