Burgas has a population of 200,271 and is located on the Bulgarian Black Sea coast in the Burgas Bay. It ranks fourth among the biggest cities in Bulgaria. Its location makes the fishing industry an important part of the economy. Although, the biggest economic contributor is the LUKOIL Neftochim Burgas oil refinery, which is the largest in southeastern Europe. Not only is the city an important economic and industrial center, but also a tourist and cultural center. This city is home to several museums, archaeological ruins, churches, and monasteries.
Ruse is number 5 on the list and has a population of 149,642. It is located along the Danube River, making Ruse the most important river port in Bulgaria. Under Roman rule, it was a military and naval hub. Today, the economy is based on textiles, tailoring, and food processing. Because of its unique neo-Baroque and neo-Rococo architecture, Ruse is a popular tourist destination as well.
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