The castle was erected in the 13th century, probably by a knight family from the Aba family, who also erected the nearby Kysak castle. From their name, both these strongholds are also called Drienov. The castle in Obišovce did not function long, probably disappeared in the second half of the fifteenth century.
A small castle was established on an oval plan with dimensions of approximately 32 by 25 meters, on the top part of the hill. Inside the defensive walls, a cylindrical tower was erected on the north-east side, and in the eastern part, a residential building was added to the wall. The tower had an internal diameter of 3.5 meters, and the thickness of its walls reached 2.8 meters. Due to the small internal space, it was rather only defensive and not residential. In the courtyard there was a rainwater tank. The gate was placed in the south-western part, probably a simple door in the wall. The whole castle was surrounded by an earth ramparts and a dry moat, about 2.5 meters deep, over which a timber bridge was placed.
Small, low fragments of the defensive wall and a residential building remained of the castle. The earth ramparts and the moat are also visible. You can get to the ruins from the village, but the faster route runs straight from the road at the foot of the hill.
Bóna M., Plaček M., Encyklopedie slovenských hradů, Praha 2007.
Wasielewski A., Zamki i zamczyska Słowacji, Białystok 2008.