Post your favorite route in the series and explain why you like it. I suck at designing routes and want to see what resonates with people.
Hard mode: You have to be concrete
I'll start: Route 38/39 in Johto. After you beat Morty the map opens up a ton after being linear the whole game, and the music sets the tone for the newfound sense of exploration. You get an area that looks unlike any of the other routes so far (heavy use of the fence, farm, unique use of the ledges in 39), new Pokemon (both wild and introduced via the trainers), and a really fun sidequest that doesn't involve battling.
https://www.youtube.com/watch?v=SMZ_8tL9TxM 