Samuel's Fortress, a fortress in the old town of Ohrid, North Macedonia, once the capital of the First Bulgarian Empire, UNESCO World Heritage Site, Ohrid, Macedonia, Europe

Samuel's Fortress, a fortress in the old town of Ohrid, North Macedonia, once the capital of the First Bulgarian Empire, UNESCO World Heritage Site, Ohrid, Macedonia, Europe

Library of Bulgarian Academy of Sciences with Nevsky Cathedral, Sofia, Bulgaria, Europe

Thracian ruins, Nesebar, UNESCO World Heritage Site, Black Sea coast, Bulgaria, Europe

Rila Monastery, UNESCO World Heritage Site, Rila, Bulgaria, Europe

Rila Monastery, UNESCO World Heritage Site, Rila, Bulgaria, Europe

Aleksandur Nevski Memorial Church, Ploshtad Aleksandur Nevski Place, Boulevard Moskovska Oborishte, Sofia, Bulgaria, Europe

The Madara Rider, an 8th century relief depicting a king on horseback carved into rockface, UNESCO World Heritage Site, Madara, Bulgaria, Europe

Courtyard, Church of the Nativity and Hrelyo's Tower, Rila Monastery, UNESCO World Heritage Site, nestled in the Rila Mountains, Bulgaria, Europe

Rose flowers in sacks for distillation, Rose Valley, Kazanlak, Bulgaria, Europe

Roman marble amphitheatre built in the 2nd century, Plovdiv, Bulgaria, Europe

Aleksandur Nevski Memorial Church, Ploshtad Aleksandur Nevski Place, Boulevard Moskovska Oborishte, Sofia, Bulgaria, Europe

Aleksandur Nevski Memorial Church, Ploshtad Aleksandur Nevski Place, Boulevard Moskovska Oborishte, Sofia, Bulgaria, Europe

The Vidin Fortress on the banks of the Danube River in Vidin, Bulgaria, Europe

Roman marble amphitheatre built in the 2nd century, Plovdiv, Bulgaria, Europe

20th April Square, Old Town Market Square, Koprivshtitsa, Bulgaria, Europe

The Vidin Fortress on the banks of the Danube River in Vidin, Bulgaria, Europe

Arcade murals depicting religious figures and scenes, Church of the Nativity, Rila Monastery, UNESCO World Heritage Site, Bulgaria, Europe

Roman marble amphitheatre built in the 2nd century, Plovidv, Bulgaria, Europe

Floodlit National Assembly Building, Ploshtad National Assembly Square, Sofia, Bulgaria, Europe

Blue walled Church of Sveta Bogoroditsa (Uspenie Bogorodichno Church), Old Town, Koprivshtitsa, Bulgaria, Europe

Courtyard, dormitories and Church of the Nativity, Rila Monastery, UNESCO World Heritage Site, nestled in the Rila Mountains, Bulgaria, Europe

Main church, Rila monastery, UNESCO World Heritage Site, Bulgaria, Europe

Samokov Gate of Rila monastery, UNESCO World Heritage Site, Rila Mountains, Bulgaria, Europe

Saint Paraskeva Church, Nessebar, Bulgaria

Saint John Aliturgetos Church, Nessebar, Bulgaria

Hagia Sophia Basilica, also known as St Sophia Church and The Old Bishopric, Nessebar, Bulgaria

Aerial view, rock relief, Madara horseman, Madara, Shumen, Shumla, Unesco World Heritage, Bulgaria, Europe

Murals, monastery church Sweta Bogorodiza, Orthodox Rila Monastery, UNESCO World Heritage Site, Bulgaria, Europe

Ceiling painting, fisheye, monastery church Sweta Bogorodiza, Orthodox Rila Monastery, UNESCO World Heritage Site, Bulgaria, Europe

Ceiling painting, monastery church Sweta Bogorodiza, Orthodox Rila Monastery, UNESCO World Heritage Site, Bulgaria, Europe

Aerial view, fortress, rock plateau Madara, Madara, Shumen, Shumla, Unesco World Heritage, Bulgaria, Europe

Mural and ceiling paintings, monastery church Sweta Bogorodiza, Orthodox Rila Monastery, UNESCO World Heritage Site, Bulgaria, Europe

Orthodox Rila Monastery, UNESCO World Heritage Site, Bulgaria, Europe

Entrance, Orthodox Rila Monastery, UNESCO World Heritage Site, Bulgaria, Europe

Orthodox Rila Monastery, UNESCO World Heritage Site, Bulgaria, Europe

Orthodox Rila Monastery, UNESCO World Heritage Site, Bulgaria, Europe

Entrance, Orthodox Rila Monastery, UNESCO World Heritage Site, Bulgaria, Europe

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