Kanto - Cerulean Gym in originals, Cinnabar in sequels (HGSS)
Johto - Azalea Gym
Hoenn - Fortree Gym (Lavaridge Gym got really improved in ORAS though)
Sinnoh - Eterna gym (both versions) or Canalave Gym
Unova - Humilau Gym
Kalos - Coumarine Gym
I really like gym layouts in HGSS and DPP. Fourth generation have some great designs.
>>36191816Not a fan of this one. Good thematically but it's boring to look at and music isn't any better.