Demetrius of Thessaloniki
Vidin maintains two well-preserved medieval fortresses, Baba Vida and Kaleto, as well as many old Orthodox churches such as St Pantaleimon, St Petka (both 17th century), and St Dimitar (Demetrius of Thessaloniki) (19th century), the Vidin Synagogue (1894), the Osman Pazvantoğlu Mosque and library, the late 18th-century Turkish ruler of north-western Bulgaria, the Krastata Kazarma of 1798, and a number of old Renaissance buildings. Also remarkable is the theatre building which was the first Bulgarian theatre in "European model" and was built in 1891.