Fun idea, but I don’t know if knowledge of a place is what is stopping people from traveling.
Tinder is useful because it connects you with people you wouldn’t otherwise meet or know, and you just have to look at a few pictures to make the first decision. Then you text them, then you meet up quickly, then you go on a date.
TravelTinder is less useful, because you can’t know you want to go to a place from 1 picture. There is the follow up research, the trip planning and then you go on a trip.
So cool idea, but I wonder if the problem it is solving isn’t the real problem.