John C. Portman Jr.

John Calvin Portman Jr. (December 4, 1924 – December 29, 2017) was an American neofuturistic architect and real estate developer. He was born in Walhalla, South Carolina. He was known for popularizing hotels and office buildings with multi-storied interior atria.
Portman also had a large impact on the cityscape of his hometown of Atlanta, with the Peachtree Center, Hyatt, Westin, and Marriott hotels.
Portman died on December 29, 2017 in Atlanta of heart failure, aged 93.