The 존 핸콕 센터 (John Hancock Center) is a prominent skyscraper located in Chicago, Illinois. Completed in 1969, it stands at 1,128 feet tall and was one of the tallest buildings in the world at the time. The building is known for its distinctive X-bracing design and features a mix of residential, office, and retail spaces. The center is home to the famous Signature Room, a restaurant located on the 95th floor that offers stunning views of the city. Additionally, the building includes an observation deck called 360 Chicago, which provides visitors with panoramic views and interactive exhibits about the city’s history and architecture.