Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Somersville Towne Center -  Somersville Towne Center is a regional shopping mall located in Antioch California. Previously named County East Mall until 2004 the 501259 square feet (46570 m2) mall is managed by The Macerich Company. Originally opened in 1966 it is strategically positioned in one of the fastest growing areas of the San Francisco Bay area east Contra Costa County.
A:
Building