The Lockup is a chain that focuses on prison horror-themed restaurants. When you step in, a "prison guard" will lead you to your cell, where you'll be trapped for the rest of the evening.
To complete the full prison getup, hallways are ominously dark, and sometimes alarms can be heard in the distance.
Drinks are served in test tubes and beakers, with the occasional eyeball in them. Be wary when exploring the premises though. The staff will dress up in horror masks and outfits, designed to terrorize you when you least expect it.
Certainly lots of fun, especially after a night out in town!