From badly behaved travellers to horrendous carbon emissions, summer holidays aren’t always an unmitigated good. Here is how to travel responsibly and still have a great time
Over the past three decades, Venice has become one of the most notable victims of overtourism. The city currently welcomes an estimated 30 million visitors per year, far above the 50,000 residents that actually call it home. And more than two thirds of visitors come just for the day.