Fodor's Expert Review Tinmel Mosque

One of only two mosques in the country that non-Muslims may enter (the other is Casablanca's enormous Hassan II mosque), Tinmel sits proudly in the hills and is well worth a visit. Built by Ibn Tumart, the first Almohad, its austere walls in the obscure valley of the Nfis formed the cradle of a formidable superstate and was the birthplace and spiritual capital of the 12th-century Almohad empire. Today the original walls stand firm, enclosing a serene area with row after row of pale brick arches, on a huge scale built to impress.

Admission to the mosque is free, but tip the guardian anything between 5 DH and 20 DH and he'll show you around and explain a little of the history.