While certainly not for everyone — particularly if you're squeamish — Ceský Krumlov's Museum of Torture (Museum Tortury) provides a fascinating look at the cruel ways in which criminals, and often the wrongly accused, were mistreated throughout the centuries. 

Located in the medieval cellars of the old Town Hall on the main square, this dark and atmospheric museum provides more than 100 grisly artifacts and instruments of torture, including a chilling display showing details of the horrendous witch burnings that once gripped Europe.