The Gothic tower opened in 1925. The building, which was once the home of the giant Chicago Tribune empire, is now luxury ...

Structurally, the Wrigley is a typical steel-frame Chicago high-rise of its period, with fifty caissons encased in concrete ...

Explore the Empire State Building, which held the title of the tallest building in the world for 40 years. This video delves into the building's size, intriguing facts, its interior, and the history ...