The United Center is a sports arena located on the west side of Chicago, Illinois, named after its corporate sponsor, United Airlines, located at 1901 W. Madison Street, west of downtown Chicago. The United Center is home to both the Chicago Blackhawks of the NHL and the Chicago Bulls of the NBA. The privately-owned arena is 960,000 square feet big and is located on a 46 acre parcel west of the Chicago Loop. The arena claims to be the largest in the United States - in physical size, not in capacity. The United Center seats 20,500 for hockey, 22,879 for basketball and up to 23,500 for concerts, and hosts over 200 events per year, drawing over 20 million visitors since its grand opening. Musical acts appearing at the United Center have included Coldplay, Dave Matthews Band, Red Hot Chili Peppers, The Smashing Pumpkins, The Rolling Stones, Eric Clapton, Bruce Springsteen, Billy Joel, Paul McCartney, U2, The Who, Madonna, Van Halen, Aerosmith, Bon Jovi, Pearl Jam and The Three Tenors. The United Center was also the site of the WWF SummerSlam in 1994, and the 1996 Democratic National Convention. The United Center also hosted the last WCW Spring Stampede in 2000.