you get it by searching for it for yourslf
The key to the gym
the key is in the basement
i think it's at the basement floor on a table.
The key is in the Pokemon mansion.
it's in the instruction booklet
The Secret Key that you get in the Pokemon Mansion is used to enter the Cinnabar Gym.
there is a key in the Pokemon mansion... you need it to get into the gym... search the Pokemon mansion thoroughly
You cannot get the Eon Ticket in Pokemon LeafGreen since it's a key item that is only available for Ruby, Sapphire and Emerald.
You will find the key to the Gym of Cinnabar Island, From the Pokemon Mansion that is on the same island.
It's in Cinnabar island. It's where you get the key to open the Gym #7
On cinnabar island but you need to get the secret key in Pokemon mansion first.
You have to find the key in the abandoned mansion.