Kanto

Kanto is the official name for the region shown mainly in Generation 1 and 2. Games where you can travel in Kanto are:
 * Pokémon Red and Blue
 * Pokémon Yellow
 * Pokémon Gold and Silver
 * Pokémon Crystal
 * Pokémon FireRed and LeafGreen
 * Pokémon HeartGold and SoulSilver