Why do people travel to places like Tokyo, Seoul, Amsterdam, New York, any kind of "big city" really? I watched a few travel streamers who went to these places and all they did was walk around looking at the generic office buildings and then sitting down for food after a while? like theres literally nothing to do?

I understand beach holidays and sex tourism but big cities make no sense to me, is it just narcissistic people who want pictures for their social media showing that they went to place x or what?