SOM, founded by Louis Skidmore, Nathaniel Owings, and John O. Merill, opened their NYC office in 1937. SOM is one of the largest architectural firms in the world, offering services in architecture, engineering, graphic design, interior design, and urban design, among others. The company’s primary expertise is in high-end commercial high-rises. The firm has designed some of the most famous (and tallest) buildings in the world, such as 7 World Trade Center, the Sears Tower, and Lever House. Skidmore and Owings both won the AIA Gold Medal for their architectural achievements.