The Gaylord National Resort & Convention Center is a hotel and convention center located at National Harbor, Prince George's County, in the U.S. state of Maryland.[2] The hotel is situated along the shores of the Potomac, downriver from Washington, D.C., and across the river from Alexandria, Virginia. It is owned by Gaylord Hotels, a division of Ryman Hospitality Properties (formerly known as Gaylord Entertainment Company), and operated by Marriott International. The hotel opened April 1, 2008, as part of a new mixed-use (office, residential, and retail) development in National Harbor.[3] It is one of the largest non-gaming hotel and convention centers on the East Coast of the United States.[4] It cost $870 million to build.[5]