Pittsburgh Mills (locally known as The Mills) is the largest shopping mall complex in Western Pennsylvania as well as one of the largest in the state, with approximately 2 million square feet (186,000 m²) of retail space on 200 acres (0.8 km2). King of Prussia Mall near Philadelphia remains the largest mall. The grand opening of Pittsburgh Mills was on July 14, 2005; it is located in Frazer Township, Pennsylvania, northeast of Pittsburgh, just off the Pennsylvania Turnpike along PA Route 28.
Pittsburgh Mills was conceived and originally developed by the Mills Corporation. On December 30, 2006, it was announced that the Mills Corporation sold its stake in Pittsburgh Mills to its partner in the project, Zamias Services Inc. Because of this, Pittsburgh Mills is currently the only American Mills mall that's neither owned or managed by Simon Property Group. Vaughan Mills near Toronto & the recently opened CrossIron Mills outside Calgary, Aberta are the only other Mills-named mall that is not owned or managed by Simon. To date, it is the last Mills-type mall built in the United States.