City: Philadephia
Address: 421 North 7th St.
Capacity: 3,000
Coolest Feature: The upper level allows patrons to see some of the action backstage

When the original Electric Factory closed 40 years ago, the city of Philadelphia was robbed of one of its greatest concert venues. Thankfully, that absence was temporary; it was resurrected in 1994 and stationed between Willow and Spring Gardens Streets. Since its revival nearly two decades ago, the Electric Factory has rapidly became one of the leading venues in America.

It's huge, holding as many as 3,000 people in a warehouse-like space that also sports an upper level that allows patrons infatuated with every facet of the concert-going experience to see some of what's going on backstage. The Electric Factory caters to all crowds, booking acts from Fall Out Boy to Nas. Memorable moments include a fateful Nas show when he brought Quan out to perform "Just A Moment," and the crowd picked up the slack when Quan forgot the lyrics. And, of course, almost everytime the Roots perform, they always bring out at least one special guest.

The Electric Factory is also nestled between Northern Liberties and Old City, so anyone who's bold and enjoys walking can trek to both following the show.