My world has one of those (apparently) ever popular black, obsidian deserts created by ancient volcanic activity. Orcs and half-orcs have dwelled there for centuries contemplating their place in the world and guarding their libraries. They posess knowledge from before The Exile, when the gods were destroyed. They are centered in some black monoliths that predate their migration to the desert.
They are always fending off attacks by the lizardfolk, the only other humanoids within thousands of miles.
Lizardfolk skins have been stitched together and stretched between the monoliths to form a gargantuan canopy that creates shade and collects whatever moisture that might form on it before the day's sun burns it away. The moisture drains into cisterns beneath the monoliths that store the water which they depend on for survival.
There is a waterfall in the arctic whose spray freezes on the way down forming very sharp ice crystals. These are quite dangerous and can land nearly anywhere around the base of the falls which is known as The Daggerdowns.
There is a forest of trees whose sap is highly flammable. It is not uncommon for the entire forest to burst into flames during a heat wave. The seeds need lots of heat to germinate and grow very quickly for the first 10-15 feet.
Unknown to most people the planet is currently in an ice age that is steadily getting worse. It was somehow caused by the almost total elimination of magical creatures from the world.
Numerous haunted areas and strange stone formations dot the landscape. Including this one that I posted in
another thread.
Dutney Knife
A large stone sliver juts out of the earth like a dagger thrust into the ground. This stone is called Dutney Knife, after the countryside of Dutney which surrounds it. Like all megalithic formations, this one has its legends. The Dutney Knife is said to be the weapon of a god whose followers began to worship another deity. In his indignation the god threw down his knife and vowed that one day he would return for his revenge. To this day, though, the stone just stands there, several stories high, jutting out of (or stabbing into) the earth near the village of Dutney.
The ground surrounding the knife is always blood red. This "stone knife" is actually a gigantic sliver of iron ore. The "blood" on the earth surrounding it is simply rust. However, unknown to most the ore does have strange qualities. Weapons made from this ore are always covered with a coat of rust, but never disintegrate, waste away or require any sharpening. It is also whispered that weapons fashioned from the ore might have the same dreaded power as a rust monster. Superstitious fear keeps most people from taking any of the ore for use in weapon making or anything else.
It's actually probably one of the most boring landmarks in my world.