Viridian City is in the Kanto region. You'll be able to get there by going through Diglett's cave after waking the sleeping Snorlax.
Pewter City
Near the virdian forest entrance on Thursday.
go north to the viridian forest and that will get you out.
nowhere
You can get Pollywhirl in Pokemon Leaf Green in Virdian City.
Virdian Forest.
Virdian forest
Its to the LEFT of Virdian City
in the johto region its in blackthorn city and in the kanto region its in virdian cityblackthorn cityBlackthorn City, past the Ice Cave.
Go to the Pokemon League, West of Virdian City
in the ilex forest and later in the virdian forest
Go to the place where the people are saying that there are wild Pokemon, Professor Oak will come and choose your Pokemon and then get there and at the end of the grasses you will find Virdian City.