Places of interest
Castra Martis

The Roman fortress Castra Martis is located in the town of Kula, 32 km from Vidin and 200 km from the capital of Bulgaria Sofia. Castra Martis is a late Roman fortress, whose remnants are located in the centre of the town of Kula. It was built at the end of the 3rd and the beginning of the 4th century as a part of the defence facilities of the Danube border with the Roman Empire. The fortress occupied crucial position through the westernmost passage of the Balkan Mountain – Vrashka chuka and it guarded the important Roman road to Singidunum (Belgrade).