@CaptainElsa oh man, there's some fun build ideas here! I think my most unique build is a
community centre? (And more images
here.) It's set as a library, but it also computers, a cafe, a skills space, and a sleeping, eating, rec space. The idea I had was that it's for people who have nowhere else to go to be able to do whatever they need in a safe environment, I had the Runaway Teen challenge in mind when I made it. For your Gotham City, I can see it being a Wayne Enterprises idea, absolutely.
Others I didn't build but absolutely love:
Brainwash Suds & Duds by SimDoughnut. Combination laundromat and bar/nightclub!
Earthly Paradise by whyeverr. A stunningly gorgeous paradise garden!
Oasis Valentine Temple by crisldicrisl. Beautiful lounge/wedding venue with a great aesthetic.
Mineral National Park by BakedSimsBuilder. It's so
sparkly.
Verdantis by Darthlilos. Full magical village!!
Hobbiton Museum by CharlyPancakes. I put this one in Del Sol, seems to fit it well!
Super Surf Internet Cafe by whyeverr. Perfect for off-the-grid households, might be a bit strange in Neverland ;)
I also recommend a ton of other stuff by whyeverr, crisldicrisl, and Darthlilos, they have a ton of really creative stuff. Darthlilos especially does a lot of fantasy and sci-fi-related stuff.
A couple I can't link to directly because they have CC - I absolutely
adore Culpepper Heights by bottsbotts, which is this glorious build with a comedy club, luxe bar, adorable cafe, and wonderfully seedy subway station. And this is
The Orangery by Linea - probably the prettiest pool I've ever seen!
I've linked the most unique and different builds above, but I have a list of
all the builds I use in my game
here, including the above and a whole lot more. They're all beautifully built!