Machu Picchu is a UNESCO World Heritage Site located in Peru that receives over 1 million visitors per year, making it Peru's most visited tourist attraction. While tourism provides major revenue, the growing number of visitors poses a physical burden on the ruins. In the late 1990s, the Peruvian government approved plans to build infrastructure like a cable car and luxury hotel to encourage more tourism. However, these plans were protested by those concerned they would further damage the site. UNESCO has considered listing Machu Picchu as a World Heritage Site in Danger due to threats from overtourism.