11 Countries Where Tourists Are No Longer Welcome

5. Machu Picchu, Peru: Safeguarding Ancient Heritage

Peru's iconic Inca citadel, Machu Picchu, meticulously manages visitor flow to preserve its ancient stone structures and fragile environment. Visitors must now adhere to specific circuits, often with time limits, and access to certain key areas can be restricted. Tickets are issued for specific entry times, and overnight stays within the citadel itself are forbidden. These capacity controls are crucial for mitigating erosion, maintaining the site's structural integrity, and ensuring a sustainable, respectful experience of this sacred wonder.