TThe Wachovia Center, formerly known as the CoreStates Center and the First Union Center, is an indoor arena located in Philadelphia, Pennsylvania, in the United States. It is the home arena of the Philadelphia Flyers of the NHL, Philadelphia 76ers of the NBA, and the Philadelphia Wings of the NLL. The arena was completed in 1996 on what was once the site of John F. Kennedy Stadium at a cost of $206 million, largely privately financed (though the city and state helped to pay for the local infrastructure). The building lies at the southwest corner of the South Philadelphia sports complex, which includes Lincoln Financial Field, Citizens Bank Park, and the Wachovia Spectrum, its predecessor as home to the Flyers, 76ers, and Wings.

The arena was originally named for CoreStates Bank, which agreed to pay $40 million over 21 years for the naming rights, with additional terms to be settled later for an additional eight year period at the end of the contract. The naming rights were taken by First Union Bank in a merger in 1998 and then by Wachovia Bank in a 2003 merger with First Union. While under the First Union name, it was affectionately referred to as the "F.U. Center" by Philadelphians. Due to this, a name alteration was considered, the "First Union National Center." However, this was met with much derision from fans and athletes who played in the facility, such as former Philadelphia Flyers forward Brantt Myhres, who said the name change would make the building sound like a "circus venue."

The arena officially seats 21,600 for basketball (NBA, NCAA) and 19,519 for hockey (NHL, AHL) and indoor ("box") lacrosse (NLL), although with additional standing room admissions available in suites for purchase by their lease holders the total paid capacity is actually somewhat greater. The Wachovia Center has 126 luxury suites, 1,880 club seats, and a variety of restaurants and clubs (both public and private) available for use by patrons. In addition, the offices, studios, and production facilities of CSN Philadelphia are all located in the facility.

On August 1, 2006, Comcast-Spectacor announced it would be installing a new center-hung scoreboard to replace the original one made by Daktronics. The new scoreboard, manufactured by ANC Sports is similar to other scoreboards in new NHL & NBA arenas. An additional linear LED display lining the entire arena was also installed between the suite and mezzanine levels. Other renovations for the building's 10th year anniversary included upgrading the suites with more flat screen HDTV's, as well as changing ticket providers from Ticketmaster to New Era Tickets, which is owned by Comcast-Spectator.