Mass tourism is gonna massively scale back over the coming decades, as most people do cultural travel to flex. Almost nobody goes to the Louvre for the Louvre, they go to have said to have been there - to have a bad picture taken besides the Mona Lisa.
Most people would not travel to cultural spots if they were sworn to secrecy.
When you can automatically imitate a whole euro-trip with a prompt and virtually for free, there's no flex value, as the brokest people can imitate your "evidence" and the AI generated one looks better as there's no crowds, unless you want them.
Similar thing happened with the aristocratic Grand Tour, where noblemen would go to Italy and whatnot for years at a time, to showcase how cultured/rich they were. This tradition more or less died out when trains made travel more affordable and more available, as it stopped being a flex.
That leaves us with people who want to travel because of genuine cultural reasons. I'd say those are a minority (I include myself there, but I'm a pretentious pseudo intellectual). Are these people plentiful and wealthy enough to make up for the 90% of people travelling for bragging rights? Doubtful.
This will create a negative feedback loop where travel becomes more expensive because there's not enough people creating economies of scale to fund the supply necessary to keep it affordable. Yes, initially there's a race to the bottom with lowering prices, but eventually the providers just close shop.
Cultural travel will never die, but it'll cater to richer people, and be inaccessible to everyone else.
Don't get me wrong, assuming that normal people still have money, they'll definitely want to travel. But they'll not feel compelled to get the touristy selfies, they'll instead go to resorts, to get pampered in luxury places by a pool or somesuch.
Furthermore, the simulacra of real things are starting to get more compelling. For example, there's a full-scale replica of the Parthenon in Nashville, with a giant golden statue of Athena inside.
If you want to see how the Parthenon was like 2000 years ago, ironically travelling to the U.S. might be the better option. We know full well what the Parthenon looked like, it was blown up in the 17th century, so rebuilding an accurate simulacra is not out of the question. Europeans deciding not to is a conservation decision, the Japanese would not have made the same choice - as proven by them constantly rebuilding historical sites that get damaged/destroyed. For them, it's the idea that is more important than the form. Each society decides how they view the Ship of Theseus.
Or look at the Huawei campus, which has one-to-one copies of the buildings of Bruges, Český Krumlov, Verona, Bologna, Budapest, Tallinn, and Granada. This random campus in Dongguan, China ironically feels increasingly more European than Europe does at times given that it's increasingly deracinated.
While yes, these simulacra places are artificial and surface-level, the surface is exactly where most people stay.
It's arrogant to assume that Europe will forevermore retain the cultural monopoly of Western thought.
Europe will persist forever from tourism and other rentier behaviors.
It's the only continent with such a density of history, beautiful cities, landscapes, it's the only 100% safe region on earth. I can go on.