The Mills Corporation was a publicly traded real estate investment trust headquartered in Arlington, Virginia, United States, acquired on April 3, 2007 by an investment group composed of Simon Property Group and Farallon Capital Management. The company developed, owned, and operated major super-regional shopping malls. The company built 18 "Landmark" centers in which the malls were named after "Mills", like "Vaughan Mills," or "St. Louis Mills"; and also over 20 "21st Century Retail" regional malls that they started operating in 2002, like Del Amo Fashion Center and Southdale Center. Most former Mills facilities have a large movie theater from 10–30 screens, and a large food court (sometimes two). Their facilities are normally built in modern/abstract architectural designs. Simon Property Group assumed management of the former Mills properties after the acquisition, and is operating the former "Landmark Mills" group as a separate operating segment within its organization.