The leader of a volunteer project I was in, was a 75 year old British man who had settled in Brooklyn. My jaw dropped when he told me he had visited some 140 countries, mostly on someone else's dime. Apparently when he was a young man, his job was to scout interesting locations for ultra wealthy people to visit. So he'd go check out the places, draw up an itinerary and also arrange private planes/logistics etc for his clients. And most of the time also go with them (weeks or months later), so he got to visit the some places more than once.

This was pre-internet (some 40 years ago, I guess), I don't know if such jobs exist today. I don't even know what they are called (concierge travel agent?).

The ultra rich truly live on another level.