Lake Titicaca is the largest South American lake by volume of water. It is referred to as the highest navigable lake in the world with elevation of 3812m (12,507ft) It is known for its thin air, cold water, beautiful vistas, hidden sunken Inca gold treasures but what I've always hoped to see were the famous floating islands of Uros. These are about 40 or so artificial islands created by stacking layers of reeds on top of each other. They are settled by an indigenous tribe who now a days make their living entertaining tourists like me and selling them trinkets.