Machu Picchu has become one of the most visited South American locations, and the country of Peru has decided to make some moves to protect the ancient site.

According to The Guardian, the Peruvian government has made the changes after Unesco threatened to add Machu Picchu to its list of world heritage sites in danger. In 2016, 1.4 million tourists visited the site – an average of 5,000 people a day.

Starting on July 1, 2017, visitors will only be able to enter the site with a tour guide, and tickets will only be valid for a specific time period – either 6 a.m. to noon, or noon to 5 p.m. All guides must be licensed, and they can only bring in up to 16 people at a time.

Visitors will have to follow defined routes, and no longer be able to wander around the site.

If you can’t make it to Machu Picchu, you can visit the site on Google Street View now.