Ruins of Nialiab Castle on the outskirts of Korolevo. Hungarian king Ishtvan V builds a hunting lodge on grounds of what was one an old Slavic settlement. Later, in the second half of XIII century, Beila IV built a stone castle, to strengthen borders of the state. In 1405 the castle was handed over to Pereni family. After the anti-Hapsburg uprising, which the Pereni family took part in, the castle was destroyed by orders of emperor Leopold I.