I like Finnian MacManus' reimagination of the worlds of Dune, the 1965 book by Frank Herbert. Above you can see the main palace in Harakkeen — a renamed city of Arrakeen in an alternative ending where House Atreides loses the war against House Harkonnen. The rest of his work is quite cool too.
Finnian MacManus is a freelance concept artist and designer living in Pasadena, California. He specialises in 2D environment design, along with 3D concepts.