I'm A Banana
Potassium-Rich
Sometimes, for me, the hardest part of adventure design isn't the conflict or the enemies, but figuring out *where* the conflict should occur... hence this thread. 
So post your ideas. They can be grand locations of geography (a desert, a swamp, a floating city, whatever), or more specific locations for engaing combat or adventuring (a slimy bridge over a chasm? A near-endless plummet down a shaft?)
So here's some to start off.
01: The Dried Lake
It used to be the largest lake on the planet, miles deep, with clear water that was circulated through a spring deep within the earth. Great sea monsters once called this place home...thousands of years ago. Today, it is endless sand, studded with the skeletons of once-great creatures; seashells hundreds of feet tall stand deep in the drifting sand, serving as houses, as fortressess...and the ghosts of the sea monsters still roam the canyons....in addition, the spring itself can lead deep below the surface of the earth.
02: The Peaks
Spearing nearly vertically out of a nest of valleys filled with a poisonous mist, the peaks stretch up narrowly, like a bed of spikes from the clouds, bridges spanning their length. Flying is the best way to get around, but savage winds threaten to throw you to into the mists below. Multicolored kites hang from them, harnassing the power of the wind, and ancient statues keep vigil over travelers here.
03: The City of Water
Think Venice; the city is filled with canals, rivers, and crammed with buildings. A vigilante group of crime-fighters call this place home, worshiping the celestial as the founder of their group.

So post your ideas. They can be grand locations of geography (a desert, a swamp, a floating city, whatever), or more specific locations for engaing combat or adventuring (a slimy bridge over a chasm? A near-endless plummet down a shaft?)
So here's some to start off.
01: The Dried Lake
It used to be the largest lake on the planet, miles deep, with clear water that was circulated through a spring deep within the earth. Great sea monsters once called this place home...thousands of years ago. Today, it is endless sand, studded with the skeletons of once-great creatures; seashells hundreds of feet tall stand deep in the drifting sand, serving as houses, as fortressess...and the ghosts of the sea monsters still roam the canyons....in addition, the spring itself can lead deep below the surface of the earth.
02: The Peaks
Spearing nearly vertically out of a nest of valleys filled with a poisonous mist, the peaks stretch up narrowly, like a bed of spikes from the clouds, bridges spanning their length. Flying is the best way to get around, but savage winds threaten to throw you to into the mists below. Multicolored kites hang from them, harnassing the power of the wind, and ancient statues keep vigil over travelers here.
03: The City of Water
Think Venice; the city is filled with canals, rivers, and crammed with buildings. A vigilante group of crime-fighters call this place home, worshiping the celestial as the founder of their group.