Architect A. Eugene Kohn, co-founder of the design firm behind some of the world’s tallest skyscrapers, died on March 9. He was 92.

In a statement, Kohn Pedersen Fox (KPF), whose best-known projects include New York’s One Vanderbilt and the Shanghai World Financial Center, described Kohn’s architectural legacy as “enduring…projects that have changed our cities around the world for the better.”

Eugene Kohn, with William Pedersen and Sheldon Fox, established KPF in 1976 and spent the next four decades helping to mold the company into one of the giants of modern architecture. The firm designed projects from university campus buildings to airport terminals, and is best known for gravity-defying high rise buildings, including the Ping An International Finance Centre in Shenzhen, China, which soars 1,966 feet above ground.

In New York, the firm is responsible for skyscrapers on Fifth Avenue, Broadway, and Times Square.