New research suggests that the UK's crumbling prisons should be closed and replaced with superjails.
So what better use for the old Victorian prisons than to turn them into hotels?
Take a look at some notable conversions from around the world
This former Ottoman prison, the Sultanahmet, is now a luxurious boutique hotel – the Four Seasons in Turkey
The old prison in Ljubljana, Slovenia, is now a youth hostel called the Celica
The Charles Street jail in Boston has been converted into the luxurious Liberty Boston hotel
The old Carleton County jail in Ottawa, Canada, is now a youth hostel
The Het Arresthuis in the Netherlands once housed 105 prisoners but has been transformed into a luxury hotel
The island of Långholmen, Stockholm, was once a penal colony for women in the 1700s, but is now the location of a chic hotel
The former Liepaja prison in Latvia offers visitors the chance to experience life inside a Soviet prison; here, a member of staff poses as a prison guard
A passageway at the converted Jailhotel in Lucerne
The Lloyd hotel in Amsterdam was a former youth prison
A hallway in the Katajanokka prison hotel in Helsinki, Finland
The Malmaison hotel in Oxford was converted from Oxford prison
