Hoşap Castle (Turkish: Hoşap kalesi, is a large medieval castle located in the village of Güzelsu (previously Hoşap), Gürpınar District, Van Province, Eastern Anatolia, Turkey. It is at a distance of approximately 50 km to the city center of Van. Most of the surviving structure was built by the local Ottoman governor Sarı Süleyman Bey in 1643.[1] Hoşap or Xoşabê means Sunday in Aramaic. It also means "beautiful water" in Persian and "Güzelsu" has the same meaning in Turkish.[2]