TIZI-N-TEST
Up, looking down 
(courtesy of Look Lex)

Driving up the valleys on the Marrakechian side of Tizi-n-Test can be vertiginous for many travellers. At certain points the road is not more than a metre wider than your car, and there is no protection that will hold you back from falling down hundreds of metres.

But if you're OK with this, the views can be quite spectacular, and there are a new village for every valley, all made out of houses that merge with nature, both in material and in the way they climb the mountain sides.