Third Rome
Tarnovo (Veliko Tarnovo) was an old Bulgarian capital and the strongest Bulgarian fortification of the Middle Ages between the 12th and 14th century and the most important political, economic, cultural and religious centre of the empire. In the 14th century as the Byzantine Empire weakened Tarnovo claimed to be the Third Rome based on its pre-eminent cultural influence in the Balkans and the Slavic Orthodox world.