Welcome to Discover Prince William & Manassas, VA.  Discover Prince William & Manassas is the destination marketing organization for Prince William County and Manassas, Virginia. We ares open Mon.-Fri. with free Prince William & Manassas brochures available: visitor guide, and local area maps. We also offer free relocation packets to any future resident available by request. Stop by our Tourist Information Center located in Occoquan at 200 Mill Street for visitor services, maps, brochures, guides, and driving directions to anywhere in Prince William County and the City of Manassas area.