#black sea
- Abkhazia — A geographical region located on the eastern coast of the Black Sea and the southern slope of the Greater Caucasus. In the field of balneoclimatology and Eastern European medical history, Abkhazia is internationally recognized as a premier therapeutic climatic zone, famous for its sanatoriums in Gagra or Sukhumi, built for the recovery of patients with chronic respiratory ailments, pulmonary tuberculosis, and cardiovascular diseases due to ionized mountain-marine air.
- Adjaria — An autonomous republic located in the southwestern part of Georgia, on the eastern coast of the Black Sea, bordering Turkey. It is a region of high strategic importance, with its capital at Batumi, characterized by spectacular mountainous terrain, a humid subtropical climate, and a rich history shaped by the confluence of Georgian, Ottoman, and Pontic cultures.
- Agigea — A strategically important locality and commune in Constanța County, Dobrogea, Romania, situated on the Black Sea coast and at the junction of major transport routes, including the Danube-Black Sea Canal. In a structural sense, it is renowned for its industrial port, major road junction, unique natural reserves, and marine research stations.
- Apollonia — The name borne by numerous colonies and city-states across the ancient Greco-Roman world, founded in honor of the god Apollo, the most renowned being Apollonia in Illyria (modern-day Albania) and Apollonia Pontica (modern-day Sozopol, Bulgaria, on the Black Sea coast). These settlements represented major urban, commercial, and cultural hubs fostering strategic maritime and academic routes essential for the Mediterranean basin.
- Asprokastron — The Greek-origin name (meaning 'White Castle') under which the historic fortress and city at the mouth of the Dniester River, later named Cetatea Albă, was known in medieval Byzantine and Genoese documents. It represents a commercial and strategic node of crucial importance on the Black Sea coast, historically contested between the Byzantine Empire, the Republic of Genoa, the Principality of Moldavia (under the reign of Stephen the Great), and the Ottoman Empire.