Amguid Crater One of the best-preserved impact craters on the planet is located in the middle of the Sahara Desert. Assekrem A century-old stone hermitage overlooks this remote pass in the Hoggar mountains, surrounded by a landscape of eroded volcanic cores. Martyrs' Memorial This massive monument towers over the city as a constant reminder of the lives lost during Algeria's hard-won war for independence. Opera d'Alger (Algiers Opera House) A new landmark that fosters cultural exchange between traditions. Royal Mausoleum of Mauretania The original resting place of Queen Cleopatra and Mark Antony's only daughter. Sacred Heart Cathedral of Oran This former cathedral is now a bustling library packed with students and pigeons. 1 2 Next »