The Haunting of Tram Car 015 by P. Djèlí Clark is set in an alternate history Cairo. In this world a researcher managed to open a hole between our universe and one inhabited by mythological beings sometime in the mid-1800s. The resulting migration of some of those beings as well as the technological and scientific discoveries enabled by the whole situation resulted in Egypt coming to prominence in the world. In this particular story we follow two investigators for the Ministry of Alchemy, Enchantments, and Supernatural Entities as they investigate a tram car that is haunted getting a close look at this interesting different version of the world along the way.
This is a fascinating exercise in world building that is supported by an interesting plot and likeable characters. I would heartily recommend it.
