Alliant Energy Center is a 164-acre multi-building entertainment and event venue in Madison, Wisconsin that hosts expositions, conventions, conferences, concerts, trade shows, and various consumer events. The facility features the Veterans Memorial Coliseum, Exhibition Hall, New Holland Pavilions, Willow Island outdoor venue, and Arena Building with comprehensive amenities including ample parking, catering, audio-visual equipment, and on-site accommodations., Alliant Energy Center is a 164-acre multi-building entertainment and event venue in Madison, Wisconsin that hosts expositions, conventions, conferences, concerts, trade shows, and various consumer events. The facility features the Veterans Memorial Coliseum, Exhibition Hall, New Holland Pavilions, Willow Island outdoor venue, and Arena Building with comprehensive amenities including ample parking, catering, audio-visual equipment, and on-site accommodations.