Fortresses
Kaliakra – Archaeological Reserve
Cape Kaliakra and the architectural reserve on its territory are located 12 km southeast of Kavarna.
Tsarevets – Architecture and Museum Reserve
Architectural and Museum Reserve Tsarevets is one of the most frequented tourist sites in Bulgaria.
Medieval Fortress near the village of Mezek
Near the village of Mezek (Svilengrad Municipality), on the Kaleto hill stand the ruins of a medieval Byzantine fortress from the end of the 11th century AD.
Veliki Preslav – National Historical-Archaeological Reserve
The town of Veliki Preslav is situated on Golyama Kamchia River, 30 km away from Pliska, the capital of the first Bulgarian Kingdom, 20 km away from Shumen, the district centre, and 25 km away from Targovishte.