The John Hancock Center is a famous skyscraper located in Chicago, Illinois. Completed in 1970, it stands at 1,128 feet tall and has 100 floors. The building is known for its distinctive X-bracing on the exterior, which adds to its unique architectural style. It was designed by the architectural firm Skidmore, Owings & Merrill. The John Hancock Center houses offices, residential apartments, and a popular observation deck called 360 Chicago. This observation deck offers stunning views of the city and Lake Michigan. The building is also notable for its dark glass façade and is one of the tallest buildings in the United States.