Machu Picchu, Peru

Machu Picchu’s 4,044 daily visitor cap, enforced with timed tickets and mandatory guides, reflects a 30% reduction from pre-2019 levels to combat erosion—a stricter control than #3 Dubrovnik’s proposed limits. The iconic Sun Gate shot requires a 6am arrival, as 70% of tickets sell out weeks ahead. This Instagram-driven demand has made exploration a race, yet the citadel’s stonework still impresses. Tourists now face a 40% higher wait time for entry than the typical Peruvian site, proving social media’s ruinous popularity.