Algeria is a North African country with a Mediterranean coastline and a Saharan desert inland. Algeria is the 10th-largest country in the world, and the largest in the Arab world and Africa. Many empires have left legacies here, such as the ancient Roman ruins in seaside Tipaza. In the capital, Algiers, Ottoman landmarks like circa-1612 Ketchaoua Mosque line the hillside Casbah quarter, with its narrow alleys and stairways. The city’s Neo-Byzantine basilica Notre Dame d’Afrique dates to French colonial rule. This little often visited country is an archaeological treat.