Leopoldov Prison
The Leopoldov Prison (Slovak: Ústav na výkon trestu odňatia slobody a Ústav na výkon väzby Leopoldov) is a Slovak state-operated penitentiary facility located in the town of Leopoldov. Initially a 17th-century fortress built to defend against Ottoman Turks, it was converted into a high-security prison in the 19th century, and it used to be one of the largest prisons in the Kingdom of Hungary under the Habsburg monarchy.