Djerba, an island off the coast of Tunisia, is a popular vacation destination with Mediterranean beaches and whitewashed desert towns influenced by Berber, Arab, Jewish and African cultures. Houmt Souk is the main city, known for its handicraft markets, fishing port and 16th-century fortress, Borj el Kebir. To the south is El Ghriba synagogue, a pilgrimage site for North African Jews. The population is estimated (as at 1 July 2013) is 158,941. Djerba has a mild climate and fertile soil. Known for its beautiful beaches and dramatic sunsets, the island is a popular tourist destination, particularly with French, German and Italian tourists.