Search  for anything...
LEGO

LEGO Ideas River Steamboat Building Set - Room Decor for Men and Women - Boat Model Building Kit for Adults, Ages 18+ - Arts & Crafts Display for Bedroom or Office - Gift Idea for Birthdays - 21356

  • Based on 113 reviews
Condition: New
Checking for the best price...
$318.01 Why this price?

Buy Now, Pay Later

As low as / mo
  • – Up to 36-month term if approved
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: 20 left in stock
Fulfilled by Amazon
Arrives Tuesday, Aug 4
Order within 9 hours and 51 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Features

  • SET SAIL FOR NOSTALGIA Journey back to the era of elegant river travel with the LEGO Ideas River Steamboat (21356) building set for adults 18 and up
  • DETAILED MODEL BOAT Discover working paddle wheel mechanisms, detailed steam engine with moving pistons, crew quarters, passenger decks, and period-accurate furnishings
  • WORKING FEATURES & DETAILS Activate the paddle wheel mechanism, explore multiple furnished decks, and discover authentic steamboat details throughout this floating piece of history
  • DIY BOAT DECOR The completed model becomes an impressive display piece that celebrates maritime history and 19th-century river travel craftsmanship
  • IMMERSIVE BUILDING EXPERIENCE Access the LEGO Builder App for helpful 3D viewing tools and progress tracking
  • FAN-DESIGNED MASTERPIECE Relax and unwind with a building challenge dreamed up by LEGO fans and brought to life through LEGO bricks
  • DIMENSIONS This detailed steamboat measures over 15.5 in. (40 cm) high, 27 in. (69 cm) long and 5.5 in. (15 cm) wide and contains 4,090 pieces

Description

Set sail into history with the LEGO Ideas River Steamboat (21356) for adults ages 18 and up. This fan-designed masterpiece captures the golden age of river travel through meticulous brick-built craftsmanship. Adult builders can construct an authentic paddle steamer complete with a working paddle wheel, detailed pilothouse, crew quarters, and a functioning steam engine with visible moving parts. As you build, discover intricate details like the music stage, restaurant, and vintage furnishings throughout every deck from the elegant passenger areas to the bustling engine room. The completed model doubles as sophisticated home or office decor that transforms your space into a nautical museum. An ideal gift for boat enthusiasts, history lovers, and men and women who enjoy detailed model building kits, this collectible offers a relaxing creative experience that celebrates maritime heritage. For an immersive build, the LEGO Builder app provides helpful 3D viewing tools and progress tracking. Contains 4,090 pieces.

Brand Name: LEGO


Manufacturer Minimum Age (MONTHS): 216.0


Sub Brand: LEGO Ideas


Model Name: 21356


Model Number: 6530094


Manufacturer Maximum Age (MONTHS): 1200.0


UPC: 673419408301


Manufacturer Part Number: 6530094


Model Year: 2025


Included Components: LEGO Building Elements


Item Type Name: Building Kit


Manufacturer: LEGO


Unit Count: 72.0 Count


Color: Multicolor


Theme: LEGO


Subject Character: River Steamboat Building


Number of Pieces: 4090


Item Dimensions: 20.59 x 18.9 x 7.09 inches


Item Weight: 11.09 Pounds


Educational Objective: Concentration


Additional Features: Since 1958, LEGO bricks have met the highest industry standards, so they are consistent, compatible and connect and come apart easily every time – and it's still that way today


Toy Building Block Type: Interlocking Toy Building Block


Is Assembly Required: No


Material Type: Plastic


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Aug 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • A Beautiful, Thoughtful LEGO Build That Feels Like a Display Piece
The LEGO Ideas River Steamboat set is one of those builds that immediately feels special, even before you open the box. From start to finish, it’s clear this set was designed with a lot of care, and it really delivers both as a building experience and as a finished display model. The build itself is detailed and engaging without being frustrating. There’s a nice balance between structural building and decorative elements, so it never feels repetitive. As the steamboat comes together, you really start to appreciate how much attention went into the proportions and small details. The layered decks, railings, and classic riverboat styling all feel very authentic and thoughtfully designed. One of the highlights for me was how sturdy the finished model feels. Despite the intricate look, everything comes together solidly, which makes it great for display without worrying about it being fragile. The color choices are also spot on—clean, classic, and visually striking without feeling too busy. This is definitely a set that feels more geared toward older teens and adults, especially those who enjoy LEGO as a relaxing, immersive hobby. It’s not overly complicated, but it’s detailed enough to be satisfying and rewarding. I found it very calming to build, and it’s the kind of set you want to take your time with rather than rush through. Once completed, the River Steamboat looks fantastic on a shelf or table. It has real presence and draws attention, even from people who aren’t usually into LEGO. It feels more like a model or decorative piece than a toy, which makes it a great conversation starter. Overall, the LEGO Ideas River Steamboat is a wonderful set for anyone who enjoys detailed builds, classic design, or LEGO display pieces. It’s well-designed, enjoyable to build, and genuinely impressive once finished. If you’re looking for a LEGO set that feels both relaxing and rewarding, this one is absolutely worth it. ... show more
Reviewed in the United States on January 4, 2026 by Sean Bozarth
    • Great show piece!
Great Lego to do. Has a little bit of difficulty, but who would want it completely easy. Beautiful showpiece! Would recommend.
Reviewed in the United States on February 5, 2026 by Ellen L. Hitchins
    • Very Detailed River Steamboat Set
This is the first set from LEGO that I have assembled with almost 4100 pieces. The graphics in the instruction booklet were excellent. This set was built with a modular design with each floor section of the Steamboat removable. The detail throughout the Steamboat was outstanding right down to the beds in the sleeping area. The recommendation that you are 18+ is a great idea because you require patience to finish the construction. There were only two pieces missing but these are in transit to me. I have been on a replica of a Steamboat and this model is very well done with respect to design and detail. ... show more
Reviewed in the United States on December 16, 2025 by Fran Waller
    • Buy it if you like lego!
Very good build took around a day and a half to build. Highly recommend!
Reviewed in the United States on April 20, 2026 by Amazon Customer
    • Loved by my 16-year-old
Such an intricate, engaging and beautiful steamboat set. The internal fixtures are mostly hidden, but we know they are there!
Reviewed in the United States on April 8, 2026 by T. Richmond
    • River boat
If you are a LEGO fan, this set is awesome! Moving parts.
Reviewed in the United States on April 8, 2026 by MJMaiden
    • Neat set
Fun build - took a little over 2 weeks to build part time. Looks great although something happened with the rudder as not working when finished - was working as putting together - but not going to take apart to see where the problem is. Minor cons are: Stickers missing but where items located, you can’t see that. I’d like to think they would provide something other than what looks like croissants to adorn the railing but this is included in other sets as decorations- only makes sense for a bakery. ... show more
Reviewed in the United States on August 30, 2025 by Mike G
    • Looks great
Excellent set
Reviewed in the United States on April 9, 2026 by jo1212

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...