In this episode, we explore the fascinating story of how the city of Chicago became home to the world's tallest building not once, but twice. Discover the technological innovations and fierce competition behind the construction of the 10-story Home Insurance Building in 1885 and the 110-story Willis Tower (formerly Sears Tower) in 1974. From steel-frame construction to the race to reach the sky, we delve into the groundbreaking history of these towering structures that have left an indelible mark on the city and the world of architecture.