3. Malmaison Oxford -- Oxford, United Kingdom
Ranking: This slammer has style
Your time here won't be hard, that’s for sure. What is hard, however, is imagining this swanky boutique hotel as its former jail self (Her Majesty's Prison Oxford, closed in 1996). Rooms converted from three adjoining cells flank the main atrium and feature drench showers, claw foot tubs, plasma TVs, and fancy toiletries.
Coolest remaining prison feature: Thick walls, low ceilings, and original iron cell doors, as well as barred windows that don’t open.