I learnt about …

Travel the world with the geographic game - GeoGuessr

This is a very simple idea for a quiz. It drops you in a random place somewhere in the world and you use Google StreetView to work out where it is. If you are lucky you end up in a town or city, sometimes you end up in the middle of nowhere. It is amazing how much you can work out by looking at the flora or a random signpost.