The Arena - Walking Dead Filming Location

In the fifth episode of the third season we see Michonne retrieve her sword and escape the Governor's office and enter an arena where she quickly dispatches a half dozen zombies behind held captive. Later in the episode we see what this arena is used for as Merle fights Caesar hand-to-hand surrounded by chained zombies. *Note- this is private property, please don't trespass or otherwise disturb the owners.