Sears Tower - LEGO set #21000-1 (Building Sets > Architecture)
LEGO 21000 Sears Tower Set Parts Inventory and Instructions - LEGO Reference Guide
As a Chicago resident and Architecture fan, I love these three... as a fan of build techniques, man - 21000 and 21001 are some of the worst sets I've put together. : r/lego
LEGO 21000: Sears Tower | Brickset: LEGO set guide and database
LEGO Architecture Willis Tower Set 21000 - YouTube