Editing Burgas (section)

=== Bulgarian and Byzantine Middle Ages ===
In the [[Middle Ages]], there were important settlements in the area: the fortress ''Skafida'', ''Poros'', ''Rusokastron'' ([[Battle of Rusokastro]]), the Baths called Aquae Calidae and used by Byzantine, Bulgarian and Ottoman Emperors; a small fortress called ''Pyrgos'' was erected where Burgas is today and was most probably used as a watchtower. Under the [[Byzantine Empire]] it became an important city on the [[Black Sea]] coast. The Bulgarian ruler [[Krum]] built the [[Erkesiya]], a {{convert|140|km|0|abbr=on}}-long border wall from the Black Sea (near Gorno Ezerovo) to the [[Maritsa River]].

In 1206, the [[Latin Empire|Latin Emperor]] [[Henry of Flanders]] (see [[Fourth Crusade]]) destroyed Aquae Calidae, which was known as Thermopolis at this time, The baths were later rebuilt by the Byzantines and Bulgarians. Poros was mentioned in a 1270 document of the Patriarchate of Constantinople.<ref name="IW6065">Ivan Karayotov, Stoyan Raychevski, Mitko Ivanov: ''История на Бургас. От древността до средата на ХХ век.'', Tafprint OOD, Plovdiv, 2011, {{ISBN|978-954-92689-1-1}}, S. 60–65</ref> Close to Poros took place the [[Battle of Skafida]] in 1304, when the Bulgarian Tsar [[Theodore Svetoslav of Bulgaria|Todor Svetoslav]] defeated the Byzantines and conquered the southern Black Sea coast.

At the beginning of the 14th century, the region was sacked by the [[Catalan Company]]. In the 13th century Burgas is mentioned by the Byzantine poet [[Manuel Philes]] in his works as ''Burgas''.<ref name="IW6065"/>