Bulgaria’s third city and maritime capital, Varna is the most interesting and cosmopolitan town on the Black Sea coast. A combination of port city, naval base and seaside resort, it’s an appealing place to while away a few days, packed with history yet thoroughly modern, with an enormous park to amble round and a lengthy beach to lounge on. In the city centre you’ll find Bulgaria’s largest Roman baths complex and its finest archaeological museum, as well as a lively cultural and restaurant scene. Source: Lonely Planet