Zantyr - Credit: Wikimedia Commons
Zantyr (, . ) is a lost Teutonic Order castle with established commandry and town with cathedral, seat of the bishopric. In the early 13th century it was located at present day Pomeranian Voivodeship, in Sztum County, in the municipality of Sztum, south of the village Uśnice or in the region Biała Góra at the confluence of the rivers Nogat and Vistula. Here, at the southern end of the Vistula delta region (Żuław Wiślanych), resides the Nogat River Protected Landscape Area. Read more on Wikipedia
Source: en.wikipedia.org