The Steelers, whose history traces to a regional pro team that was established in the early 1920s, joined the NFL as the Pittsburgh Pirates on July 8, 1933, owned by Art Rooney and taking its original name from the baseball team of the same name, as was common practice for NFL teams at the time. To distinguish them from the baseball team, local media took to calling the football team the Rooneymen, an unofficial nickname which persisted for decades after the team adopted its current nickname. The ownership of the Steelers has remained within the Rooney family since its founding. Art's son, Dan Rooney owned the team from 1988 until his death in 2017. Much control of the franchise has been given to Dan's son Art Rooney II. The Steelers enjoy a large, widespread fanbase nicknamed Steeler Nation. The Steelers currently play their home games at Heinz Field on Pittsburgh's North Side in the North Shore neighborhood, which also hosts the University of Pittsburgh Panthers. Built in 2001, the stadium replaced Three Rivers Stadium which hosted the Steelers for 31 seasons. Prior to Three Rivers, the Steelers had played their games in Pitt Stadium and Forbes Field.