It opened on December 8, , and cost $ billion. MGM National Harbor is a casino hotel in National Harbor, Maryland, just outside of Washington, D. Guests can enjoy numerous on-site. . MGM National Harbor Resort & Casino features a casino and puts you within a 5-minute walk of MGM National Harbor Casino. Located in Oxon Hill, MGM National Harbor is mi from downtown National Harbor and mi from Old Town Alexandria. MGM National Harbor A $ billion casino resort featuring entertainment, a spa and salon, high-end retail, meeting space and more than a dozen restaurants. Book your stay now for the ultimate gaming experience. C. Experience the premiere gaming floor any time of day with 24/7 casino. Enjoy world-class gaming, dining, and shows at MGM National Harbor hotel and casino. MGM NATIONAL HARBOR RESORT CASINO Just minutes from Downtown Washington, DC! The grand MGM National Harbor is a world-class destination resort casino in. Enjoy table games, slots, and more at MGM National Harbor casino. MGM National Harbor offers modern elegance with rooms and suites all drawing inspiration from forest and water elements native to Maryland while. Book now for a remarkable. Our hotel offers luxurious accommodations, entertainment, dining, and more. Visit the top casino in National Harbor. No one comes around to ask if you want a drink. Discover endless possibilities at MGM National Harbor. Worst casino I have ever been to! Half the slot machines are down or broken. Guests can visit the spa to be pampered. I tried to get two small bottles of.