Damásd Castle, Medieval castle ruins near Ipoly River, Hungary

Damásd Castle is a ruined medieval castle on a small hill just past the last house of Ipolydamásd, beside the road toward Balassagyarmat. Only its walls survive; the site is marked by a band of cobblestones laid along the road edge. The heavily eroded remains are not especially spectacular.

The castle was first mentioned in 1361, when its castellan was Búza Balázs; 12th-century pottery fragments found among the ruins suggest an earlier structure. Hard to defend, it served mainly as a royal hunting lodge and a watch post over the Ipoly road. Ottoman troops took it in 1544; it was retaken in 1595 and rebuilt with a garrison and the right to collect the thirtieth customs duty. In 1641 the Ottomans seized it again in a surprise attack during the captain's absence, then burned it under the Peace of Szőny, ending its military role.

The castle site features information boards that detail the military history of this former royal hunting residence from the 14th century.

The ruin lies beside the road from Ipolydamásd toward Balassagyarmat, just past the village's last house on a small hill; a band of paving stones at the road edge marks the spot. There are no signs, so the overgrown mound is easy to miss. Information boards and a picnic table were placed here in 2013–14 and part of the vegetation was cleared.

The castle's exact construction date is unknown, but 12th-century pottery fragments were found among the ruins. Its first written mention dates from 1361, when its castellan was named Búza Balázs. A row of square stones laid along the roadside marks the exact spot of the ruin.