Bolghar

The capital of Bulgaria on the Volga from the 8th-15th century, the ruins of this city intrigue because of the other Bulgaria, the one on the Danube. Similarities in language break down according to religious influences, Byzantium on the Danube and Islam on the Volga. Arab traders wrote about Bolghar, which profited as a trading center after the Mongol conquest in the 13th century. The ruins were rediscovered in the 18th century and visited by both Peter and Catherine the Greats, further testament to the perrenial empire.