Philip Johnson (1906–2005) was an American architect and theorist who played a defining role in 20th-century architecture. His Glass House (1949) in New Canaan, Connecticut, remains an icon of modernism. As the first director of MoMA’s architecture department, he introduced modernist principles to the U.S. He later embraced postmodernism, designing bold projects like the AT&T Building in New York. Johnson’s shifting styles made him a controversial yet influential figure. Awarded the first-ever Pritzker Prize (1979), he left a lasting impact through both his designs and his role in shaping architectural discourse.