➤ Mossdeep City

Mossdeep City lies on an island along the eastern edge of the Hoenn mainland. Many divers live at Mossdeep, and it is the fourth largest city in the region. While it's no bustling Slateport, one of the city's unique and popular attractions is Wailmer watching.
A deep underwater trench runs between Mossdeep City and Sootopolis City which was found by Captain Stern in his submarine. Mossdeep City also is home to the Psychic Pokémon Gym.

The island of Mossdeep is covered in plants and flowers. Its weather is mainly sunny, and its winds are stable. This clear weather made Mossdeep the ideal location to build a space center to launch large rockets. Research is underway day and night in this city, all in the hope of understanding the distant reaches of space.