Alliant Energy Center is a multi-building complex located in Madison, Wisconsin. It comprises 164 acres (0.66 km2) of greenspace and includes the 255,000-square-foot (23,700 m2) Exhibition Hall, the 10,000-seat Veterans Memorial Coliseum, the 29-acre (0.12 km2) Willow Island, several multi-use pavilions, and the 22,000-square-foot (2,000 m2) Arena. Wikipedia