Crystalia

Crystalia is the home world to the Crystalian race.

Population
The population of Crystalia isn't known for sure. Most experts agree that around 1.4 million crystalians live on Crystalia. The capital city of the same name is said to have around 195 thousand.

Wild Life
Crystalia is home to many wonderful creatures such as the White Rhino, which is extinct on Earth. Also, though very rare, wild Pokemon can be found on Crystalia, such as Hootch finding an injured Riolu while on a misson.

Important Locations
Crystalia's main continent is divided in 4 areas: Forest, City, Desert and Mountains.

Forest - The forest area is called "Crystal Fields" which extends itself into the "Crystal Forest". Northwest of the forest, the entrance to the Painful Path is located. West of the forest, there's a small island with unknown information.

City - The City area is divided in two. First, the main part where the capital city is along with the Overseer Tower. The second portion is where Matt, Hootch and Derick currectly live, as a small village exists there. The way to the mountains cannot be crossed thanks to high cliffs.

Desert - The Desert area is called "Great Desert" with several dunes. It's easy to get lost in the desert, those who are not well equiped before heading into the desert are fated to be lost forever. The Spirit Sanctuary is located in the north part of the desert.

Mountains - The mountains are exactly what they are... Mountains. Behind them, the Crystal Gateway is located and it makes a direct link with Order's Sanctuary.

Islands
Boats can be taken to visit the islands located west and southwest of the main continent.

Lightning Island - The island where lightning can strike twice at the same target, many people risk themselves to see this weird phenomena.

Solution: Matt with Alec's help awoke the God of Thunder, thus, making the never ending rain and thunderstorm stop.

Waves Island - The island of clear water. The water at this place flows with strong vital power, as those who drink this water feel themselves free of weariness.

Blazes Island - The island where an active vulcan resides. It is easy to know when an eruption is going to occur.

Gale Island - The island of strong, yet, relaxing winds. The air is so pure that you feel your spirit clean from any worries.

White Island - The island where the Crystal Tower is located. Many people come to this place in order to try and see the God of Creation. Though, that's probably only a myth.

Trivia

 * The Spirit Santuary, located in the desert may be a reference to Spirit Temple of The Legend of Zelda: Ocarina of Time being that both are located in a desert.