beat the other seven gyms and come back
it is final gym need to beat all other gyms
Viridian city.
Viridian city.
Viridian City gym!!
Viridian City.
Beat the eighth Gym, which is in Viridian City!
viridian city
In the viridian city. The gym leader is the boss of team roket
The last gym is the Earth gym in Viridian city. The one that was closed at the start of the game.
Blue, the Viridian gym leader(looks like your rival for Pokemon FireRed/LeafGreen), is on Cinnabar Island. Talk to him and he'll say a few things, then go to his gym in Viridian City.
The Viridian Gym leader is Giovanni, so he is probably in Team Rocket's secret hideout or the Silph Co. building.
After obtaining the other 7 badges you return to Viridian City and the gym will be open.