After his father's death in July 1950, Saarinen founded his own architect's office, Eero Saarinen and Associates. He was the principal partner from 1950 until his death. The firm carried out many of its most important works, including the Bell Labs Holmdel Complex in Holmdel Township, New Jersey; Gateway Arch National Park (including the Gateway Arch) in St. Louis, Missouri; the Miller House in Columbus, Indiana; the TWA Flight Center at John F. Kennedy International Airport, which he worked on with Charles J. Parise; the main terminal of Washington Dulles International Airport; and the new East Air Terminal of the old Athens airport in Greece, which opened in 1967. Many of these projects use catenary curves in their structural designs.