The company was named New York City Ballet in 1948 when it became resident at City Center of Music and Drama. Its success was marked by its move to the New York State Theater, now David H. Koch Theater, designed by Philip Johnson to Balanchine's specifications. City Ballet became the first ballet company in the United States to have two permanent venue engagements: one at Lincoln Center's David H. Koch Theater on 63rd Street in Manhattan, and another at the Saratoga Performing Arts Center, in Saratoga Springs, New York. The School of American Ballet (S.A.B.), which Balanchine founded, is the training school of the company.