>>12540921Sinnoh's map is pretty great, I had the most fun sightseeing in Sinnoh, and the Underground was fucking
secret based.
Hoenn would be a close second.
Johto third, Kanto was very lacking in the aspect of interesting visuals.
Inb4 someone comes in this thread and shitposts because he thinks that this is a question of favorite generation when it's just which map you like the best.