When you think of prisons, do you think of cell bars and barbed wire? Strictly regimented lifestyle, inmates packed into tight cells like sardines, and unforgiving, cruel prison guards? And do you think all prisons are exactly that tough? Think again. Because some prisons are even nicer than your crappy one-bedroom apartment. In fact, some of them are positively luxurious. These posh prisons have pools, gardens and even hair salons. Inmates learn trades and, carry their own keys, coming and going as they please. So here are the most posh prisons in the world.