Including predecessor companies, GGP has been in the shopping center business for over fifty years. One of the nation\'s largest REITs, General Growth owns, develops, operates, and/or manages shopping malls in 44 states, as well as Master Planned Communities in three states, including Summerlin in Nevada, The Woodlands and Bridgeland in Texas, and Columbia in Maryland. GGP has ownership interests in and/or management responsibility for more than 200 regional shopping malls totaling approximately 200 million square feet of retail space.