Selfie in a stairwell taken with a 360° camera. Stereographic projection. Art Deco Hotel in London

That's what I was thinking - this basically took me to my dentists office

Yeah that's the one. It's usually used to make the little planet photos.

Edit: fyi 360 degree cameras take photos using an Equirectangular projection

Aw cool, so does that mean maps of the world are stereographic projections?

Thanks. I'm really happy with how it came out.