Visk Castle, Medieval fortress in Zakarpattia Oblast, Ukraine

Visk Castle is a ruined wooden fortress on Mount Varged (589 m) near Vyshkovo, Zakarpattia Oblast. Its triangular plan, about 60–70 m per side, is outlined by earthen ramparts and ditches; the central platform measures roughly 20×15 m, with a 5×10 m terrace in the middle. A small rock recess was used for storing food.

The castle was built during medieval times to guard important trade routes and valleys in the region. It served as a critical point for monitoring movement through the Carpathian valleys.

The name Várhegy (Castle Hill) was given to Mount Varhed only after the fortification was built, and the Hungarian form survives in local usage. The castle appears in the accounts of historian Soós Elemér, who surveyed the ruins in the early 20th century and drew a reconstruction with stone walls and towers, although the excavated remains are earthen ramparts around a wooden fort.

The ruins lie on the 589 m summit of Mount Varged, southeast of Vyshkovo; the steep northern slopes are the hardest part of the climb, while earthen ramparts and ditches ring the other sides. The central platform measures about 20 by 15 m, with a 5 by 10 m terrace in the middle and a small rock recess once used for storing food. The Ukrainian-Romanian border runs 3 km south and the Tisa 3 km north, so carry water and wear firm footwear for the uneven ground.

The castle was wooden, not stone: a triangular fort of about 60–70 m sides on the summit plateau, ringed by earth ramparts and ditches, with a 20×15 m inner platform and a 5×10 m terrace. A hollow in the rock outcrops served as food storage. The stone walls and towers come from a reconstruction drawing by military historian Soós Elemér (1844–1929), not from the site itself.