The largest island on Lake Titicaca, the “Island in the Sun” is an ancient holy Inca site with over 80 ruins dating back to the 15th century AD. The rocky piece of land can only be explored by foot and there are several walking tracks to help visitors get around. Among the Inca monuments, tourists will find the Inca Table, a platform thought to have been used for human sacrifices; the remains of a two-story palace; and a set of rock impressions dubbed The Footsteps of the Sun. The island also boasts an Inca gold museum and a spring that the Spaniards thought to be the fountain of youth.