Viļaka Castle

57°11′38.52″N 27°41′22.48″E / 57.1940333°N 27.6895778°E / 57.1940333; 27.6895778TypeCastleSite informationOpen to
the publicYesConditionRuinsSite historyBuiltAfter 1516Built byArchbishopric of RigaMaterialsStoneDemolishedEarly 18th century

Viļaka Castle (Latvian: Viļakas pilsdrupas) (Mariensee Castle, Marienhausen, Villack) is a castle in Balvi Municipality in the Latgale region of Latvia. The castle is located close to Viļaka town, on an island in the Viļaka Lake. Built by Archbishopric of Riga in 1342 as a wooden castle, rebuilt as a stone castle after 1516. The castle was destroyed in 1702 during the Great Northern War. The outer walls are 1.6m thick, remaining fragments of the walls are up to 2 meters high.

• List of castles in Latvia

• Zarāns, Alberts (2006). Latvijas pilis un muižas. Castles and manors of Latvia (in Latvian and English). Riga. ISBN 9984-785-05-X. OCLC 72358861.{{cite book}}: CS1 maint: location missing publisher (link)
• Krahe, Friedrich-Wilhelm (2000). Burgen des deutschen Mittelalters. Grundriss-Lexikon (in German). Flechsig. ISBN 3-88189-360-1.