Currently in the lead is Oklahoma City's Legends Tower, a 1,907-foot structure that would be the tallest building in the U.S.

The massive project to modernize the historic immigration museum comes as political tensions over immigration are rising.

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 ...