LEGO Ideas 21356 River Steamboat - 4090 Pieces Adult Display Model
Build a masterpiece of maritime engineering with the LEGO Ideas 21356 River Steamboat, a 4090-piece model designed by LEGO fans and crafted for adult collectors. This minifigure-scale paddle steamer transforms into stunning nautical decor measuring over 69 cm long, featuring a working steam engine museum, interactive moving parts, and removable deck sections that reveal detailed interior spaces. Experience the meticulous craftsmanship of classic steamboat design through brick-by-brick construction, complete with functional paddle mechanics and a fully detailed boiler deck engine system. Whether you display it in your home office or living room, this collectible set celebrates over a century of river transport history.
- Nautical decor for the home or office - Create a detailed LEGO Ideas display model of a classic paddle steamer that has been refurbished to become an entertainment tour boat and steam engine museum.
- Buildable boat model - With a removable wheelhouse, removable texas deck with crew cabin and bathroom, removable main deck with music stage and restaurant and a boiler deck with a kitchen and a museum.
- Realistic details - Move the boat on a surface to activate the paddle connected to the steam engine and turn the ship's wheel in the wheelhouse (or the knob outside) to activate the rudder.
- Steam engine museum - Explore the museum on the boiler deck, which features the brick-built working engine of the boat, a LEGO working piston, an aeolipile (steam turbine) and a Watt steam engine.
- Gift idea for men, women and any boat-travel fans or history-lovers - Treat yourself or gift this LEGO boat model kit to other adults who have a passion for boats, history or travel.
- A helping hand - Find building instructions on the LEGO Builder app and in the included booklet, which features an interview with the set's fan designer and fascinating info about river steamboats.
- The LEGO fans' choice - This collectible set for adults is part of the LEGO Ideas range, where each building set is created by a fan designer, voted for by LEGO fans and produced by the LEGO Group.
- Home office decor - This 4090-piece, minifigure-scale LEGO boat display model measures over 40 cm (15.5 in.) high, 69 cm (27 in.) long and 15 cm (5.5 in.) wide.
How long does the build take?
Experienced builders can complete this in around 10 to 11 hours; those who take their time will need closer to 16 to 17 hours. Best enjoyed across several building sessions.
Who is this set suitable for?
This set suits dedicated LEGO collectors and adult enthusiasts aged 18 and up who appreciate intricate builds and historical engineering. LEGO fans who voted for this Ideas design, maritime history lovers, and model builders seeking a substantial display piece will find deep satisfaction in the 4090-piece construction. Parents and grandparents can gift this to adult children or grandchildren who collect LEGO as a serious hobby, particularly those interested in nautical themes, working mechanical systems, or museum-quality display models.
What is the highlight of the Ideas 21356 River Steamboat?
The standout feature is the fully functional steam engine museum on the boiler deck, complete with a working brick-built piston system, Watt steam engine, and aeolipile steam turbine that demonstrates actual mechanical principles. Moving the entire boat across a surface activates the paddle connected to the engine, bringing authentic steamboat engineering to life in your display.
Is this set also suitable for adults?
Yes, recommended from 18+. This set is aimed at experienced builders and collectors.
Is this set suitable as a gift?
Gift this set to adults with passion for maritime history, engineering enthusiasts, collectors who appreciate intricate mechanical builds, or anyone seeking an impressive display piece for their home office. It makes an excellent gift for birthdays, anniversaries, retirement celebrations, or as a reward for completing advanced LEGO collections. The fan-designed story and included interview with the designer add personal significance beyond the physical model itself.
| Item information |
Value |
| Age Recommendation: |
18+ |
| Parts: |
3000–4999 |
| Item weight: |
5,54 kg
|
| Dimensions
( Length × Width × Height ):
|
52,30 × 48,00 × 18,00 cm |
| Article Name: |
LEGO Ideas 21356 River Steamboat |
| Interests: |
Mobility, Ships, Collectors & AFOL, Display Model |
| HAN: |
6530093 |
| Piece Count: |
4090 |
| End of Life: |
31.12.2026 |
| Release Date: |
01.07.2025 |
Product safety information
Manufacturer information:
LEGO System A/S
Aastvej 1
Billund, Dänemark, 7190
product.compliance@lego.com
https://www.lego.de
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