Earthport Descent

Fallen Dwikka Fruit

The Simulacra

A flapple above Los Angeles, a vehicle that crops up in several books by Phil K Dick

Three to a Given Star

Thieves of Viola Siderea

Alpha Ralpha Boulevard

The Jungle - Cities in Flight

From the book by James Blish.

Amalfi's flying New York City settles on the Planet He, a primitive jungle world located in a rift between galaxies. The equipment in an old tunnel section once used to wash subway trains thousands of years ago on Earth is still functioning, and the natives of the planet use it as a shower room.