Constanta, Romania
Constanta, Romania - 2022 Danube River cruise. Constanta is Romania’s oldest continuously inhabited city and was founded by the Romans around 600 B.C. and was known as Tomis. The National History and Archaeology Museum on Ovid’s Square contains numerous artifacts from the Roman times. It is the largest port on the Black Sea and is the fifth largest city in Romania with a population in excess of 660,000.