It's not canon, but in Ted Chiang's short story about the tower of Babel. The tower was perpetually in construction, so a whole society eventually flourished in

It's not canon, but in Ted Chiang's short story about the tower of Babel. The tower was perpetually in construction, so a whole society eventually flourished in the tower. Some people never even left the tower because it took too long to get down from the place they were born.