2Plovdiv, Bulgaria

Currently enjoying its time in the limelight as a European Capital of Culture, Plovdiv is Europe’s longest inhabited city.

The main draw here is the astonishing second-century Roman amphitheater, which wasn’t uncovered until the 1970s.
Another highlight is the Thracian ruins of Eumolpias, located just outside town and dating back 5,000 years.

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