Glassed Apartment Stairway In Yambol

I found this interesting piece of glass architecture on the backend of a small apartment block on the outskirts Yambol. It covers the landings and flights of stairs all the way to the top. Most apartment buildings have brick or blocks with no natural light and the use of lights have to be switched on to find your way up. No need for that here, all they need is street lamps and no light internal light would be needed during night either. I wouldn’t be seen to be going up those stars though as I have vertigo!