LOL
It started out as Municipal Auditorium, when it opened in 1931. (With the asterisk that the Civic Center and Convention Hall were a combination of buildings that started in 1899.) It hosted the 1936 Democratic National Convention (DNC), the 1940 Republican National Convention (RNC), the 1948 DNC and the 1948 RNC. As a result, is came to be called Convention Hall.
The Philadelphia Warriors and the Philadelphia 76ers played there before the Spectrum opened in 1967. I think the Sixers played there after the roof of the Spectrum blew off, but I'm not certain of that.
Anyway, Convention Hall closed in 1996. I believe the 1996 Atlantic 10 Men's basketball tournament was the last event held there that was open to the public. The Pennsylvania Convention Center opened in 1993, and that took away most of the non-sports use of Convention Hall. For the next decade or so, Convention Hall was mostly used as a soundstage and for movie scenes.
Convention Hall was torn down in 2005.