One of my favorite live music venues in Philly, the Trocadero (or the Troc) is a small and intimate concert hall with very nice acoustics. Located in the Chinatown neighborhood, the building itself was originally named the Arch Street Opera House and opened way back in 1870, when its offerings were musical comedies and traveling minstrel shows. Later it hosted vaudeville and burlesque. Luckily, the historic character of the building remains evident today. The Trocadero is the only 19th century Victorian theater still in operation in the US, and is listed on the US Register of Historic Places. All that history aside, the Troc is a great place to catch a live music or comedy show.