Metropolitan Opera House (Philadelphia)

The Metropolitan Opera House (opened as Philadelphia Opera House; today, informally, The Met) is a historic opera house in Philadelphia, Pennsylvania. Opened in 1908, it has been used for many purposes; since December 2018, it has been a pop concert venue managed by Live Nation Philadelphia.

Built in 1908, it was the ninth opera house built by impresario Oscar Hammerstein I and was initially the home of Hammerstein's Philadelphia Opera Company. In 1910, Hammerstein sold the building to the Metropolitan Opera of New York City, who renamed it. The Met used the building through the 1920s, after which it changed hands again and various other opera companies used it through 1934.

For eight decades, it remained in constant use, though its use changed from opera house to movie theater, to a ballroom, a sports venue, a mechanic training center, and a church. In 1988, the building was in serious disrepair and fell into disuse. In 1995, it became the "Holy Ghost Headquarters Revival Center at the Met". The church stabilized much of the building, eventually paving the way for the renovation of the facility in 2017–2018.

The opera house was added to the National Register of Historic Places in 1972.