Gym 4 - Gym 5

New Saffron City / MONK HQ (Formerly Power Plant)
Orville's gym is located here

(Badly Damaged) Cerulean City
Aura's gym is located here

(Ruined) Saffron City - Weather Tower #2
Weather Tower #2 is located here, inside old Silph building Controlled by CANKER

(Ruined) Celadon City
Controlled by CANKER

...Continue south to Vermillion City....