The Wisconsin Center (formerly Midwest Express Center, Midwest Airlines Center, Frontier Airlines Center and Delta Center) is a convention and exhibition center located in downtown Milwaukee, Wisconsin. The center is part of a greater complex of buildings which includes the UW–Milwaukee Panther Arena and the Milwaukee Theatre, and was a replacement for the former Great Hall portion of the MECCA Complex. Up until July 1, 2013, the building was named after its sponsor Delta Air Lines when Delta purchased naming rights to the facility in August 2012. Delta later terminated its naming rights at the center on June 30, 2013 and the facility was officially renamed to "Wisconsin Center" on July 1, 2013.