The Gaylord National Resort & Convention Center is a hotel and convention center located at National Harbor, Prince George's County, Maryland. 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. It is the largest non-gaming hotel and convention center on the East Coast of the United States.