The Town of Dokkalfar

Dokkalfar appears at first glance to be a medium-sized settlement on an island in Northeim. However, to assume that what meets the eye is all there is to see would be highly incorrect.
Dokkalfar is merely the overworld entrance to the civilized Underdark, and the city beneath it (The Underground City of Asaraz) is a sprawling, highly cultured metropolis, settled by the haughty and isolationist drow. The above-ground city is settled primarily by elves and humans, although the occasional drow will be found living among them. For the most part, they prefer to visit briefly for matters of trade or social standing, as the drow care very little about any other species unless they have incredibly deep pockets or significant power.
As such, Dokkalfar is surprisingly high-class, with tall and elegant buildings, fully paved streets, and possessing technology uncommon to the mainland, such as crystal-powered streetcars, and hovering platforms. It has numerous banquet halls and other meeting places for rent, and lining the streets are fine shops such as delicate bakeries and chocolatiers, haberdasheries and exquisite tailors, intricate jewelers, high-minded bookshops, and more.