How Long Does LEGO® Unicorn Castle (31175) Take to Build?
A typical builder finishes LEGO® Unicorn Castle (set 31175, 390 pieces) in about 1 hour. Taking it slowly runs closer to 1 hour 20 minutes; building at a fast pace, about 45 minutes.
PieceTick estimates build time from piece count, part complexity, the set’s age rating, your experience level, and how you sort pieces. Adjust those on this page for an estimate matched to how you build.