The banks of the Potomac is the innovative National Harbor, a perfect springboard to experience the best of US capital. This resort puts you right at the center of Maryland’s thriving waterfront district. Enjoy National Harbor’s premier shopping and dining options, along with popular attractions like the Capital Wheel, sightseeing cruises, and fishing excursions Pictures used are stock photos. May not be exact unit. Primary Guest Must be 21 to check in. Resort collects a $250 security deposit.