Leptis Magna or Lepcis Magna was a prominent city of the Roman Empire, located in present-day Libya. Its natural harbor facilitated the city’s growth as a major Mediterranean and Saharan trade centre, and it also became a market for agricultural production in the fertile coastland region. The Roman emperor Septimius Severus (193–211), who was born at Leptis, became a great patron of the city. Under his direction an ambitious building program was initiated. Over the following centuries, however, Leptis began to decline because of the increasing difficulties of the Roman Empire. After the Arab conquest of 642, the lost city fell into ruin and was buried by sand for centuries.