Play Carmen Sandiego and GeoGuessr with them? Or if they like board games, maybe the Pandemic series (especially the Legacy ones, which have more story and different cultures, but might be a bit advanced for a 7-year-old, depending?). Or Ticket to Ride for an easier play. Or Power Grid.
Might also be fun to play around in Google Earth (it's still around!), maybe in VR. Or make some maps together in Felt.com (easy) or QGIS (harder).
Oh, and there are a bunch of scratch-off maps you can get too (on Amazon and elsewhere). Might be fun to combine those with country-specific games, or trivia, or whatever.
There are also these books: https://brilliantmaps.com/book/
And that website has a link to other board games too: https://brilliantmaps.com/strategy-board-games/