. Plovdiv, Bulgaria – 6,000 years old

The second-largest city in Bulgaria, Plovdiv was originally a fortified Thracian city, before becoming a large Roman city. It later fell into the hands of the Byzantines and Ottomans, before integrating Bulgaria. The city is an important cultural centre and is home to many ancient remains, including an amphitheatre and a Roman aqueduct, as well as Ottoman baths. Throughout its history, it was dominated by Byzantines and Ottomans until, finally, the Bulgarians conquered it in the year 815. The name Plovdiv first appears in the 15th century. e