The ruins of Beckov Castle are a national cultural monument in which of these countries?

Beckov Castle (Slovak: "Beckovský hrad/Beckov") is a castle in ruins located above the former town of Beckov in Nové Mesto nad Váhom District, Trenčín Region, western Slovakia.

It is a national cultural monument (the castle was proclaimed a national cultural monument in 1970) and its present appearance is the result of renovations in the last quarter of the twentieth century and since 2002.

The original name of the castle was "Blundix" (Latin version). The name was derived from Slavic "Bludište" reflecting the difficult terrain in the area ("blúdiť"- to wander, in the modern Slovak language "bludište/bludisko" - a maze). Later, the name of the neighbouring village Beckov was adopted also as the name of the castle.

A stone castle was built there to protect the borders of the Kingdom of Hungary, probably in the middle of the 13th century. The castle became property of Matthew III Csák at the turn of the 13th and 14th centuries and was fortified under his rule.

Slovakia, officially the Slovak Republic, is a landlocked country in Central Europe. It is bordered by Poland to the north, Ukraine to the east, Hungary to the south, Austria to the west, and the Czech Republic to the northwest. Slovakia's mostly mountainous territory spans about 49,000 square kilometres (19,000 sq mi), hosting a population exceeding 5.4 million. The capital and largest city is Bratislava, while the second largest city is Košice.