Kallatis was founded on the Black Sea by Heraclea Pontica in the 6th century B.C. In Greek Kallatis means "the beautiful." Its first silver coinage was minted approximately 350 B.C. In 72 B.C., Kallatis was conquered by the Roman general Lucullus and was included in the Roman province of Moesia Inferior. Throughout the 2nd century A.D., the city built defensive fortifications. Kallatis suffered multiple invasions in the 3rd century A.D. but recovered in the 4th century A.D. to regain its status as an important trade hub and port city. Today Kallatis is called Mangalia, the oldest city in Romania.