During the rule of the Ancient Romans, Burgas was known as Deultum, and was established as a military colony for veterans by Vespasian. In the Middle Ages, a small fortress called Pirgos (Πύργος being Greek for "tower") was erected on the place and was most probably used as a watchtower. It was only in the 17th century that a settlement named Ahelo-Pirgas grew in the modern area of the city. It was later renamed to Bourgas and had only about 3,000 inhabitants, most of them Greeks at the time of the Liberation

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Bourgas aurait été fondé par les Romains (sous Vespasien - Ier siècle). Au XVIIe siècle, Bourgas portait le nom d'Ahelo-Bourgas et était un petit village de pêcheurs. Activités de pêche et de culture de céréales. La forteresse turque se trouvant dans les environs, le Pirgos, a reçu son nom de Bourgas. En 1878, année d'émancipation de la Bulgarie, la ville comptait seulement 3000 habitants.

source: Wikipedia