
"With a BrickScore of 83.1 and an extraordinary 4.88-star average across over 9,500 owner ratings, the LEGO ISS is about as close to a consensus masterpiece as an Ideas set gets: a faithfully detailed, all-printed display model that consistently delivers more than buyers expect for the price."
Reviewers across Brickset and a large pool of LEGO.com owners gave the International Space Station near-unanimous praise, landing it a BrickScore of 83.1 and a Highly Recommended tier. The completed model's size and accuracy consistently surprised buyers, and the absence of stickers in favor of printed elements was called out as a major win. Owner sentiment is exceptionally strong: 9,541 ratings average 4.88 out of 5, and 90% of LEGO.com buyers would recommend it.

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"It will come as no surprise at this point that I highly recommend this set. It's a fantastically designed LEGO model of one of mankind's most impressive achievements of the modern age, representing a true high-water mark…"
The Brothers Brick
"21321 International Space Station maintains that marvellous standard and seems exceptionally realistic when compared with the original space station."
Brickset Reviews"it's really real life Lego in space and that's fascinating I had as someone who's not dedicated to learning about the ISS I had no idea just how much it was like this and it made me more interested in the real thing whic…"
JANG's LEGO Reviews"this looks absolutely gorgeous it's a good display set"
Solid Brix Studios
"It will come as no surprise at this point that I highly recommend this set. It's a fantastically designed LEGO model of one of mankind's most impressive achievements of the modern age, representing a true high-water mark of international cooperation."

"21321 International Space Station maintains that marvellous standard and seems exceptionally realistic when compared with the original space station."
"it's really real life Lego in space and that's fascinating I had as someone who's not dedicated to learning about the ISS I had no idea just how much it was like this and it made me more interested in the real thing which is fantastic"
"this looks absolutely gorgeous it's a good display set"
Space enthusiasts overwhelmingly love the ISS as a stunning, impressively large display piece, though a vocal minority find it frustratingly fragile both during the build and on the stand.
Amazon4.9
LEGO.com4.5