PokeGym
 

Pokemon Go - Gym Locations.

Pokemon Go Gyms are places where trainers go to train their Pokemon . You can capture a PokeGym for your Team and battle the Pokémon of rival Teams. A PokeGym’s level is determined by its prestige. As a PokeGym earns prestige, it increases in level and your team can assign more Pokemons to defend that PokeGy. PokeGyms appear as towering structures in the Map View