There is a torture museum, probably the largest such, in Ghent (Belgium) --
the old Flanders castle ('Gravensteen?) which has all sorts of diabolical
torture instruments, along with an oubliette. This is now a museum, with some
exhibits placed by Amnesty International not only showing how the instruments
worked but also when they were last used -- e.g., the garotte was used in
Franco's Spain up until the early 1970s. A gruesome museum, indeed...