Founded in 944 AD, the city was annexed by the Ottoman Empire in the 16th century, and became the chief seat of the Barbary pirates who made their mark on a Mediterranean that was increasingly controlled by Europeans. Algeria became a French colony in 1830 and remained so until 1962 after a bitter struggle for independence. Please note that passengers may only disembark the ship on an organised excursion, and must remain with their guide at all times during the tour. ALL ALGIERS EXCURSIONS MUST BE PRE-BOOKED AT LEAST THREE WEEKS BEFORE SAILING: THEY CANNOT BE BOOKED ON BOARD. All tours are accompanied by a police escort to aid smooth passage through traffic. Due to immigration restrictions, customers must be assigned to a particular coach before sailing and this rule must be adhered to. Binoculars may not be brought ashore in Algeria. Passengers holding an Israeli passport or a passport containing an Israeli visa may be refused entry.