Byzantine forts

medieval castle in northwestern Syria

fortification

Dokos () is a small Greek island of the Argo-Saronic Gulf, adjacent to Hydra, and separated from the Peloponnese by a narrow strait called, on some maps, "the Hydra Gulf." It is part of the municipality of Ýdra (Hydra) in Islands regional unit and reported a population of 18 persons at the 2011 census. The island is populated only by some Orthodox monks and perennial sheep herders. The island is rocky, reaching a height of . During ancient times it was called Aperopia (Ἀπεροπία).

castle in Cyprus

castle in Northern Cyprus

castle in Larnaca, Cyprus

cultural heritage monument of Kosovo

archaeological site in Hama, Syria

castle ruin in Shathah District, Syria

Markeli (; , Markellai; ) was a medieval Byzantine and Bulgarian frontier stronghold, the ruins of which are located in Karnobat Municipality, Burgas Province, southeastern Bulgaria. Dating to Late Antiquity, the castle lay some from the modern town of Karnobat. It was the site of two notable medieval battles between Byzantines and Bulgarians, the Battle of Marcellae of 756 and the Battle of Marcellae of 792.

cultural Monument in Albania

castle in Como

fortification

Halmyris () was a Roman and Byzantine fort, settlement and naval port, located 2.5 km east of the village of Murighiol at the mouth of the Danube Delta in Romania. Its name in Roman times was probably Almyridensium.

castle in Albania

Zaldapa (Zeldepa, ) was a large Late Roman fortified city in Scythia Minor/Moesia, located near today's Abrit, Bulgaria.

Island on the Danube

thumbnail|right|Nicopsia on a modern map of the Kingdom of Georgia early in the 13th century.

Soterioupolis (; "City of the Saviour") or Soteropolis (Σωτηρόπολις) was a Byzantine fortress in the southeastern Black Sea coast during the 10th–12th centuries. The name has been suggested to apply to two different localities, Pitsunda in Abkhazia and Borçka in Turkey.

Late Bronze Age archaeological mound on the Eastern Mediterranean coast about 6 kilometres (3.7 mi) south of Jableh, Syria

historical citadel in Béja, Tunisia