Skidmore, Owings & Merrill (SOM), established in Chicago in 1936 by Louis Skidmore and Nathaniel Owings, is a privately held, global architecture, urban planning, and engineering firm. John O. Merrill joined the partnership in 1939, solidifying the multidisciplinary approach that has defined the firm's success. Headquartered in Chicago, SOM boasts a global presence with offices in numerous cities worldwide. Renowned for its innovative designs, particularly in skyscraper construction, SOM's portfolio includes iconic structures like the Burj Khalifa, One World Trade Center, and the Willis Tower. Throughout its history, SOM has championed a collaborative, interdisciplinary approach, integrating architecture, engineering, and planning to create impactful and sustainable urban environments.