Alliant Energy Center (formerly Dane County Coliseum) of Dane County is a multi-building complex in Madison, Wisconsin, United States. 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 and the 22,000-square-foot (2,000 m²) Arena. After completing various stages of planning throughout 2013, it was announced on November 26 that Dane County would be awarding a $20.7 million contract to Miron Construction for the construction of two new multi-use pavilions at the Alliant Energy Center. The exhibition pavilions, which total 290,000 square feet, will be replacing the nine current agricultural barns. Construction began following the Midwest Horse Fair in April 2014 with completion set in time for the 2014 World Dairy Expo in late September..