At an astonishing 12,500 feet above sea level, Lake Titicaca is the world’s highest navigable body of water. Straddling the border between Peru and Bolivia and protected by the Titicaca National Reserve, it is believed by ancient cultures to be the birthplace of the sun. Here, endangered aquatic wildlife like the giant water frog call the still waters of Titicaca home. Immerse yourself in this unusual landscape with a boat ride to the floating islands of Uros and Isla Taquile, where the local Taquileños people have a rich culture now supported by tourism. Whether you stay in an island eco-lodge or with a local family, you’re sure to find Lake Titicaca worth writing home about.