For 80 years, The Rockefeller Group has initiated some of the most memorable endeavors in American commercial real estate. Its proud tradition of real estate excellence began with the development of the world’s finest urban business and entertainment complex, Rockefeller Center. After building the original 6-million-square-foot Art Deco complex throughout the 1930s and into the ’40s, The Rockefeller Group developed several towers in the immediate vicinity in the ’50s and ’60s.