>>43722794My Ghost-Gym.
It doubles as a fancy coffee house named "Spirited's Point".
The pluzzle involves helping colect every cup in the place. Some Ghost-type would attack and some Trainer will challenge you for taking it's cup away!
The Guest Badge is based in the porcelain used to decorate the place.
After becoming Champion, the place is were you can rematch some Gym Leaders and importants NPC.