The Sheraton Dallas Hotel, formerly the Adam's Mark Hotel and originally the Southland Center, is a complex of International Style skyscrapers located in the City Center District of downtown Dallas, Texas. The hotel is the largest and second tallest hotel in Dallas and Texas with 1,840 guest rooms and 260,000 sq ft (24,000 m2) of meeting space. It has been host to pop culture conventions such as Project A-Kon and TwiCon.