To call the path connecting La Paz to Copacabana a road is lying. The winding path has no shoulder, no signs and is very narrow. But, it's incredibly beautiful. Most of the time it runs along the great Lake Titicaca, and when it does, the undulating landscape is dotted by humble cottages surrounded by gardens. The real adventure begins after an hour and a half in the village of San Pedro. The village is along the Strait of Tiquina and you have to get off the bus to cross it on an 18th century raft. Passengers cross in a brightly painted boat. Once on the other side, you have to walk a few yards to get another bus.