Eterna City Gym, which of course is in Eterna City, is the second gym to be challenged in the Sinnoh Region. Like Celadon City Gym the trainers here, including the Gym Leader Gardenia, are all female and they all use Grass-type Pokémon. In Diamond and Pearl the player character had to traverse a forest maze which was leveled out to fit the style of the Nintendo DS 3d graphics. This came into more use in Pokémon Black and White. In Pokémon Platinum, the center of the Gym is a big floral clock that changes hands when you beat a trainer. Eterna City is North of Floaroma Town. In Diamond and Pearl each time you beat a Trainer, they would give you a clue for where to find the next trainer. There are five trainers in the Eterna City Gym, including the Gym Leader in Diamond and Pearl. When you defeat the fourth trainer, she'll inform you that the Gym Leader is next. In Platinum there are four trainers, including the Gym Leader.