Stay at this Mandan, North Dakota hotel featuring the Bismarck area's largest in-door waterpark and full-service convention facilities. The Best Western Seven Seas Hotel & Waterpark near Bismarck, ND is conveniently located with easy access to the North Dakota state capitol in Bismarck, Fort Lincoln State Park and the renowned Hawk Tree golf course. This hotel boasts an award-winning restaurant, casino-style lounge and fitness facility, perfect for both business and resreation travelers to the Bismarck area. Hotel amenities include on-site banquet and convention facilities to accommodate up to 600 people. Each well-appointed and oversized room features free high-speed Internet access, television, microfridge, iron/ironing board, coffee/tea maker and hairdryer. King size beds and other upgraded amenities are available in select rooms. A friendly staff is ready at any moment of the day to ensure a maximum level of comfort for a truly memorable stay. Make an online reservation today and save at the newest and highest-rated hotel in Mandan/Bismarck!