Varna is the third largest city in Bulgaria and is situated on the northeast coast of the country on the Varna Lake along the Black Sea. It has a population of around 358,524 people and is an important cultural and tourist center with a history dating back over 7,000 years. Some of Varna's most notable attractions include the Roman baths, Varna Aquarium, Nikolai Copernicus Astronomical Observatory, and the Sea Garden.