The city of Constanta is located on the Black Sea coast in Romania. It is the oldest continuously inhabited city in Romania, and one of the oldest in Europe. The city was founded by the Greeks in the 7th century BC as a colony called Tomis. It was later conquered by the Romans and became a major port and commercial center. The city declined in the Middle Ages, but revived in the 19th century as a major port and tourist destination. Today, Constanta is a major industrial and commercial center, and a popular tourist destination.