Bulgaria

The Belogradchik Fortress is an ancient fortress located on the north slopes of the Balkan Mountains, close to the northwestern Bulgarian town of Belogradchik and is the town's primary cultural and historical tourist attraction.

The Rock-hewn Churches of Ivanovo are a group of monolithic churches, chapels and monasteries hewn out of solid rock and completely different from other monastery complexes in Bulgaria, located near the village of Ivanovo.

Ruse is the fifth largest city in Bulgaria. Ruse is in the northeastern part of the country, on the right bank of the Danube, opposite the Romanian city of Giurgiu, approximately 45 miles south of Bucharest.

Baba Vida is a medieval castle in Vidin in northwestern Bulgaria and the town's primary landmark. It consists of two concentric curtain walls and about nine towers of which three are preserved to their full medieval height, including the original battlements, and is the only entirely preserved medieval castle in the country.