White Algiers is literal: the city cascades pale down hills to a superb Mediterranean bay, eras stacked above — the UNESCO Casbah, grand French boulevards, the soaring Martyrs' Memorial, and now the Great Mosque with Earth's tallest minaret (265m). Emerging-tourism advantage: near-zero crowds for true discoverers. Explore the Casbah with a local guide, and save Friday for Tipaza's seaside ruins or the Chréa cable car.