Burgas is the seaside resort and the fourth largest city in Bulgaria.Burgas is a city on Bulgaria’s Black Sea coast. At its heart, the Church of Saint Cyril and Methodius is known for striking stained-glass windows over its main entrance. Nearby, the Ethnographic Museum explores Bulgarian folk culture, with colorful costumes and everyday items. Along Burgas Bay is the Sea Garden, with broad promenades, performances at its Summer Theatre and a viewing platform at the end of its pier.