The Sears Tower Kit* (now known as the Willis Tower)in "Lego Architecture" is an exciting new concept in building and design for budding and experienced architects or for Lego fans of all ages. Each kit comes with building instructions and archival material. When constructed, the building is about 9 inches tall and 3.1" wide. It is great for ages 10+ and contains 69 pieces. Completed in 1973, this 108-story skyscraper was the tallest building in the world. Much more than a toy,the Sears Tower in Lego is educational, a fun project for the whole family, and an item worth collecting.