The present area of Nógrád County is rich in Mediaeval castles and sites of fortifications. The construction of most of these strongholds began in the 13th century and continued for a long time, but now they are mainly scenic ruins.
Some are almost hidden by the trees and even the local people know little about them. Apart from the eleven monument castles there is information about almost fifty others, which are registered as earthworks or fortresses. These castles are expressive witnesses of Hungary's history and social changes.