Burgas, city in eastern Bulgaria, capital of Burgas Province, a seaport on the Gulf of Burgas (an inlet of the Black Sea). The surrounding region is chiefly agricultural. The city has a good harbour and is linked by rail through Sofia with the European railway system. The major part of Bulgaria’s Black Sea grain trade passes through Burgas, and trade in other agricultural produce rivals that of Varna. The city’s fish-processing industry handles most of Bulgaria’s fish harvest. The city also has flour and sugar mills. Hellenistic ruins of the ancient city of Nessebar, a UNESCO World Heritage Site since 1983, are nearby. Population 193,316 (2001).