We all want to tick off those magical bucket list destinations: Venice, Iceland, Machu Picchu... But before booking your flight and joining the hordes of tourists flocking to these popular spots, spare a thought for the locals. Over-tourism is a real problem that’s not just affecting the environment and the local population, but also the quality of these revered sites themselves. Here are some of the destinations that are urging you not to visit, and where you should go instead.