Kutná Hora is a town in the Central Bohemian Region of the Czech Republic. It has about 21,000 inhabitants. The centre of Kutná Hora, including the Sedlec Abbey and its ossuary, was designated a UNESCO World Heritage Site in 1995 because of its outstanding architecture and its influence on subsequent architectural developments in other Central European city centres. Since 1961, the town centre is also protected by law as an urban monument reservation, the fourth largest in the country.