Samloyal23
Adventurer
In a purely fantasy setting, this sort of thing is easy. I am working on a campaign setting where one city-state is nothing but permanent Magnificent Mansions spells enchanted into trees and rocks. You can walk through the area and have no idea you are in a city, seeing nothing but well trod walkways and a few statues and fountains. Stable dimensional pockets would create whole new avenues of development for our civilisation. Think about how much room we would have for agriculture and parks if you could fit a skyscraper's worth of offices and apartments in the space of a door frame.