It is an exceptional object of Lithuanian history, archeology and memorial heritage. The castle site is located on the peninsula of Lake Asveja, which used to be an island. It is a large hill, about 500 m long and up to 200 m wide. Dubingiai castle site has been declared a Lithuanian cultural monument and included in the list of Archaeological sites. The name Dubingiai land was first mentioned in written sources in 1334, describing the attack of the Livonian Order. In the Dubingiai castle site, after the Battle of Grunwald, the Grand Duke of Lithuania Vytautas builds a castle and, already in 1415, invites King Jogaila and his mansion to visit it. Before 1430 Vytautas funded and built the church of the name of the Holy Spirit in the castle site. The further development of the castle site can be traced back to written sources since the late fifteenth and early sixteenth centuries when it goes to the Radvilos. From then until the mid-seventeenth century, the Dubingiai are inseparable from the history of the rise and flourishing of the Radvilos family. In the second half of the seventeenth century, when Biržai became the main castle of Radvilas, the time of the Dubingiai recession began. In 1808, Dubingiai was bought by M. Tiškevičius, but in the plans of that time, only the sites of the ruins of former buildings were marked on the castle site, while the rest of the territory is cultivated fields and mowed meadows.