Into the Wild West
The Ancient Eladrin Kingdom. After the War of the Beard and at the beginning of the Goblin Wars the Eladrin withdrew from the material world back into the Feywild, taking their soaring cities and empire with them.
Many of the more worldly Elves stayed behind and forged an alliance with the Dwarves that defeated the Goblins, though it left the Dwarven Empire Karad Athrak in ruins.
There are still places where the boundaries betwee the Feywild and material world blur. In these places Elven villages can often be found, with a corresponding Eladrin town or city in the Feywild.