Frank Lloyd Wright

Frank Lloyd Wright's 1,000-plus structures over seven decades created the philosophy of organic architecture, where buildings harmonize with their surroundings. Fallingwater, cantilevered over a Pennsylvania waterfall in 1939, is consistently rated the greatest American building ever constructed — outperforming #2 Antoni Gaudi's Casa Milà in cultural impact, with 4 million annual visitors to its site. Wright's influence spans 60% of U.S. architectural schools' curricula, a integration rate that surpasses the average for any architect on this list.