This building started as a 30,000-square-foot space that seated 1,400 people. Treasure Island Resort & Casino began as a bingo hall in 1984 called Island Bingo. The Lagoon, Wave Spa, Spirit of the Water, Marina, RV Park, Island Event Center, Island Xtreme Bowl Additional amenities include The Lagoon indoor water park, Wave Spa, Island Xtreme Bowl, Cyber Quest arcade, Kids Quest child care, various restaurants, a 16,000-seat outdoor amphitheater, a 2,800-seat indoor event and convention center, a 137-slip marina, a 95-site RV park and a 100-passenger yacht. Treasure Island’s 788-room hotel is the second largest hotel in Minnesota. The property features more than 2,200 slots, 44 table games, a poker room and a 500-seat high stakes bingo hall. Treasure Island is the only casino in southern Minnesota located on the Mississippi River. The Prairie Island Indian Community owns and operates Treasure Island Resort & Casino, Mount Frontenac Golf Course and Dakota Station.