Over the last few decades, innovations in aviation - wider, more efficient jets and the rise of low-cost airlines - significantly reduced the cost of flying. Bigger cruise ships capable of holding many thousands of passengers now take entire floating cities to coastal ports (which is why Venice recently banned these). Then there are the many splendors enabled by the internet, among them online booking, local reviews, smartphone mapping, and ride-hailing and home-sharing, which have collectively democratized pretty much every step involved in travel. Finally, as in almost every other issue these days, there is the influence of social media. Get the full story at The New York Times Read also "Airbnb initiative aims to combat problem it helped create: overtourism" and "TUI Group CEO downplays overtourism threat"