875 North Michigan Avenue is a 100-story, 1,128-foot-tall skyscraper located in Chicago, Illinois. Located in the Magnificent Mile district, the building was designed by Peruvian-American chief design
875 North Michigan Avenue in 2022, viewed from Michigan Avenue
The John Hancock Center under construction, August 1968
John Hancock Center in 1974
X-bracing on the tower's façade
Fazlur Rahman Khan was a Bangladeshi-American structural engineer and architect who initiated important structural systems for skyscrapers. Considered the "father of tubular designs" for high-rises, K
John Hancock Center
…the Magnificent Mile district, the building was designed by Peruvian-American chief designer Bruce Graham and Bangladeshi-American structural engineer Fazlur Rahman Khan of Skidmore, Owings and Merrill (SOM). When the building topped out on May 6, 1968, it was the second-tallest building in the world after the Empire…
A sculpture honoring Fazlur Khan at the Willis Tower
The John Hancock Center is the world's first mixed use tower. When built, it was the second tallest building in the world. It demonstrated how much more efficient and feasible building very tall skyscrapers could be in comparison to the older design and technology used by the tallest buildings up to that time.
In 1960, buildings over 20 stories were still newsworthy. Apartments in the John Hancock Center in Chicago – shown here with its distinctive exterior X-bracing – are located as high as the 90th floor.