The City of Rainbow Dreams. Even though Saffron is the biggest City in Kanto, Celadon still has the biggest department store. A place where people tend to say you can get whatever your heart might want. Despite being to big and all, the population of the city is mostly tourists and trainers passing through. They even have hotels where Pokemons aren't allowed. Celadon is also known for it's Game Corner, a very popular place that still runs even after it came out the place once was ruled by Team Rocket from the underground.
