Dubrovnik Old Town, Croatia

Dubrovnik Old Town receives 8,000 cruise passengers daily during summer, transforming its limestone streets into a gridlock rivaling the Taj Mahal's queue. Crowd-counting cameras installed in 2019 revealed peak densities of 40 people per square meter, triple the comfortable limit. The Game of Thrones effect added 30% more visitors than pre-2011 levels, and local authorities now cap daily cruise arrivals at 4,000. This proactive measure outpaces the reactive permit system at Cinque Terre, where train reservations can't prevent bottlenecks. Concrete data shows that 78% of visitors cite overcrowding as their top complaint, a rate 50% higher than the average historic city.