Seloca, the chelti homeworld. Pretty much every part of it for different reasons.
The North Pole is locked towards the local sun and has a giant rainforest with black and brown and white leaves growing on it with kilometer tall trees, the fauna is so dangerous and the terrain so difficult that even today no one has claimed to venture to the North Pole and back on foot and no settlements exist there. Slightly further south around the pole, though, are the tree cities of the north, hanging and bustling from the bright upper canopy to the dark interior, but never too close to the predator infested swamps below.
On the outskirts the marshes and swamps met the beginnings of the windswept and turbulent equator, this area is filled with soft, difficult ground and the grasshounds that lurk within, as well as the small seas that sprinkle the surface and the occasional incursion of seamonsters from them and into the rivers between them. The people here live on the few places of high ground available and fortify their dwellings well, but sometimes it's not enough.
The equator is a tornado striken barren land in perpetual twilight, the meeting point between the hot air from the north and the cold air south. The freakish and rapidly changing weather means the place is inhabited by little more than traveling nomads fighting the elements, bandits, each other, and the lack of resources trading north and south.
The south side of the planet has a six-year Summer-Winter cycle, where the barest sunlight reaches the thick mosses and lichen that form the majority of plant-life here. The giant Feeders, giant mouths on comical duck-like feet that run for their entire lives, never stopping, never slowing or they will freeze, scooping up whatever grows here, while at the same time carrying the spores of their food hundreds of kilometers to grow elsewhere. On the darkest week of winter the locals light up the night sky for over a week and is one of the biggest parties on the planet.
The south pole is again too inhospitable for almost anyone to survive, the few residents here tend to be miners ekking a living from sheltered cliffside caves. The predators here are slow and lazy and tend to ambush unsuspecting prey.
Leaving the chelti homeworld, the system itself has a few places of note as well.
Kimoga IV, Seloca's neighbor as the Fifth planet from the sun, is a lava planet with kilometer deep gullies and canyons from ancient lava floes and a massive mining operation on a never-emptying lava lake that could erupt on them at any moment. Cooling the mineral rich lava and breaking it down to its base materials.
Far from the relative happiness of the homeworld, far from the light of the star is the Kazah penal colony (Kimoga VIII). A dark, claustrophobic place of domed cities, dense living, and cruelty. The guards and the indentured criminal workforce fight a constant war inside the domes for control. Even criminals who have served their time are not truly released, forced to labor in the pits and factories and forges until they can earn enough to buy a ticket off of this inhumane world.
Kimoga IX has ice that will explode in oxygen-hydrogen steam explosions if anything remotely warm is dropped on the surface, settlements here have to be closely regulated to prevent hydrogen build-up from melting ice. As you can imagine, even after multiple recruitment drives for volunteer settlers, this planet is still rather sparsely populated.