Hospital buildings (3) - What is it ?

Just for the fun of surprizing you, I have a bit transformed this graphical image 😉. How quick can you guess what it is ?

[Monica]

Outside stairs?

[Lesley Wright]

Fire escape. Very clever

[Diana]

Love the image but don't have a clue!

[Rob Z]

LOL - I like it like this!! A sneaky 90deg rotation? :)

[Marloes]

The turn makes it so much more exciting!

[Etienne]

@stimuloog @robz @ludwigsdiana @wrightangle @monicac Thank you for playing the game. Yes it is the outside fire escape of the hospital, and for whatever strange reason, I like the graphism of the image better when it is rotated by 90 degree.