Beneath Aetherian Skies
Dominus: The Ancient Realm
Dominus is the most well-known of Aetheria's floating landmasses, reportedly having the more cities and towns than any other. It is, on-record, quite possibly the largest sky-island as well — travel overland takes days between major hubs. Adding to its fame is the widespread use of arcanotech or 'magical technology', placing its tech level above your average domain.
The terrain in Dominus varies. The Reach in the west is known for hills and crags, while the Windspear region at the center is known for sprawling grasslands. Up north the Spine of the World mountains stand between the rest of Dominus and a frozen tundra, with barely any civilization beyond a few tribes living at the base of the mountains. To the east is a vast desert known as Dragon's Grave that no one has managed to successfully cross, and the South holds a region known as the Blighted Wastes: a desolate place filled with ruins of abandoned necropolises, inhabited by undead horrors.
Sages speculate that Dominus itself is either cursed or has some abnormal magical resonance, because airships only seem capable of landing on its Western edge. Sailors attempting to fly over or around anywhere else have their ships sunk or sent back one way or another. Even stranger, flying far enough away from Dominus allows ships to safely traverse the skies and move towards one of Aetheria's other floating continents.
Despite all the civilized places, Dominus is an ancient continent still ripe for adventure with all its scattered ruins and unexplored wilderness.
Places in Dominus: The Reach
Places in Dominus: The East
Rannouchi (capital city)
Places in Dominus: The Windspear Region
Illuminias (capital city)
DM's Note: This is pretty much this campaign's stand-in for your Standard Western Fantasy Setting, and the starting area of the campaign. Everyone's encouraged to come up with other details for the setting itself through their characters' lore.
Peg source: gatheringmagic.com