In Inka mythology, a large sandstone rock on the Island of the Sun, in Lake Titicaca, was the origin place of the sun. It was there that the sun first emerged and designated the Inka as his children. Under Inka rule, and perhaps before, this rock was a destination of pilgrims who went to worship and make offerings to the sun. We present evidence that a set of solar markers existed on a ridge northwest of the sacred rock. These structures framed the sunset for groups of watchers on the June solstice, near the time of the sun festival, Inti Raymi. Historic information coupled with the organization of archaeological sites within the sanctuary area on the island suggests that elites and common pilgrims may have observed the sunset from different locations.