Is it a door... is it a window...?

Spotted this out of a first-floor window at work today (back at one of the building-site campuses). It really wasn't obvious what I was looking at for a second... Given that there are some strange artworks around the place it could easily be one of those!

[Hazel]

It's not a jump off plank into a swimming pool is it? Nightmare for me!!!

[Howard Steele]

Its a closed up hole in the wall

[Nitrogene]

It's the most uncomfortable balcony ever? :) It even has a bench to sit (hopefully you don't need leg space)

[Kerri]

Awesome shot

[Suse♡]

Hard to say but I´d go for door

[mittens (Marilyn)]

Cool shot.

[Tiedmark]

Fire escape in progress maybe?

[Pyrrhula]

At least: it`s closed.
Funny find and capture

[Henri Russell]

Great find.

[bkb in the city]

You have me puzzled. Nice shot

[Ann H. LeFevre]

LOL It looked like some pretty rickety stairs at first! No way I'd walk through that door! Good to know it's a window as it's probably sealed shut!