St. John's Fortress

St. John's Fortress is an early modern fortress in Šibenik, Croatia, situated atop a hill north of the city's historical center. Named after a medieval church dedicated to St. John the Baptist that had stood there from at least 1444, the fortress, together with the adjacent Barone Fortress, was built during the Cretan War and successfully repelled consecutive Ottoman attacks in 1646 and 1647. A local name for the fortress, Tanaja, comes from one of its structures, a plier-shaped outwork, or tenaille.