Fandom: Stargate Atlantis
Characters/Pairings: John Sheppard/Rodney McKay, Radek Zelenka, Elizabeth Weir, Ronon Dex, Teyla Emmagan, Carson Beckett, Evan Lorne, Aiden Ford, Bates, Laura Cadman, Jack O'Neill, Harry Maybourne, Jeannie Miller, Original Non-Human Characters, Imaginary Creatures from Story and Song, Atlantis.
Rating: Mature
Length: 30,758
Content Notes: no AO3 warnings apply. The author warns for kidnapping and children in peril. "They aren't injured, and they are rescued. One of their kidnappers is kidnapped in the process and then returned to her friends." There's also a warning for passages with creepy clowns - see the endnote.
Creator Links: esteefee on AO3
Themes: Uncommon settings, Worldbuilding, AU: apocalypse/dystopia, AU: fantasy/magic, Friends to lovers, First time, Humor, Action/adventure

Summary: Major John Sheppard was starving, delirious, chased by monsters to the edge of the world, when he raised the City from the sea.

Ten years later, Dr. Rodney McKay comes to the peaceful City, bringing war in his back pocket.

Reccer's Notes:
This fits the "unusual settings" category as the world depicted in this fic is extremely strange, surreal, and quirky. I've reccd it before but in a different category, and it's a story that's well worth re-reading. Despite the tags for fantasy and dystopia, it isn't traditional fantasy/magic at all, and it mostly isn't a straightforward dystopia. Yes, it's post-apocalyptic and the rest of the world's very dystopic, but Atlantis herself is a solarpunk refuge in the chaos. The story is set after the detonation of a quantum unreality bomb which plunged Earth into fantastical chaos where very few laws apply consistently - certainly not those of physics, or normality. Weird monsters, fantasy creatures, and dangerous improbabilities now abound, although much reduced in Atlantis. The worldbuilding's terrific, and woven into this new world is a story where John and Rodney meet and become friends, and more. There's also plenty of plot, including a daring rescue. It's an excellent read, and highly recommended!

Fanwork Links: When the City Wakes