Eastern State Penitentiary 1 

This week I'm in Philadelphia visiting family for Thanksgiving. On the advice of my buddy Rob, I took a trip today to tour the Eastern State Penitentiary, and old, sprawling prison complex which was built in the 1830's. The prison was designed to look like a Medieval fortress/castle from the outside. On the inside, the hub (guard shack) and spoke (cell blocks) design was an innovation later copied by penitentiaries around the world.