Machu Picchu grown rapidly. In 1912, 1914 and 1915, Bingham removed thousands of artifacts from Machu Picchu—ceramic vessels, silver statues, jewelry and human bones—and took them to Yale University for further study, supposedly for 18 months. Yale instead kept the artifacts until 2012, arguing that Peru lacked the infrastructure and systems to care for them. Eliane Karp, an anthropologist and wife of former Peruvian President Alejandro Toledo, accused Yale of profiting from Peru's cultural heritage. Many of the articles were exhibited at Yale's Peabody Museum. In 2006, Yale returned some pieces but kept the rest, claiming this was supported by federal case
Inti Punku archaeological site with windows and gates that are held up by terraces. This is the first place that tourists can see the whole sanctuary. Tourists are able to see the sun rise over the whole mountains by Machu Picchu. The location of the gate was given to watch the people passing. The route covers a distance of approximately a mile, eventually rising above the ruins of Machu Picchu The ruins themselves serve as a final stop for hikers completing an optional five-day hike from a point far back from Aguas Calientes, the city at the base of Machu Picchu. This