Sliven
City in Bulgaria
Sliven is the eighth-largest city in Bulgaria and the administrative and industrial centre of Sliven Province and municipality in Northern Thrace. It is situated in the Sliven Valley at the foothills of the Balkan Mountains. Wikipedia
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Sliven, in the Northern Thrace region of southeastern Bulgaria, is the eighth largest city in Bulgaria, with nearly 90,000 people as of 2011.