At the very west most point of the Lake of Ice is a cavern that leads to the Legendary Gym. Its walls are decorated in crystal and the training is restricted to tamers ranked at silver and above. There are more things to do there than to train. It's a large series of tunnels and cliffs meant to work out not only one's partner, but themselves.

Further west of the Kulon Mine is the Lake of Ice. Like it's name suggests, it's a lake of ice. Despite the cracks in the ice, it's actually very solid -- another benefit of being in a virtual world. Have fun ice skating.

Filled with tracks, steel, and motar, this area is constant reminder that Digimon Online is a video game. There's digimon hovering around that would be impossible to see elsewhere and they even make weapons and shields! It's a great training ground in North sector and west of Boot Mountain.

The warmest place outside of Genbu City in the North Sector is Boot Mountain. It's a rocky area, and as the name implies, mountainous region. There's actually a few lava and tar pits laying around.

North of Boot Mountain is Snow Mountain. There's barely a gradual transition between the hot and rocky terrain to the cool frost and snow of Snow Mountain. There's a hot springs and an inn to rest at.

Freeze Mountain is snow, cliffs, and hills. If one can manage to avoid the edges of the cliffs, it'd make a great snow resort.

A break away from the snow, Genbu City is a steel yet warm fortress located at the high up in the mountains. It is the largest city of the five sectors and used more for research and development for the staff. However, it doesn't stop them from treating the place partly like a snow resort. Tailmon wander around the city catering to the needs of those who check in to their inn.