My office building is perhaps the worst-designed building I've ever seen. Construction started some time in 1994, then stopped, since the developer had run out of money (or some similar reason). It then stood as a concrete shell for 10 years, and was eventually finished in 2004.
A few problems:
There are EIGHT (8) elevators in a FOURTY-THREE (43)-storey building
The single freight elevator is the same size as a regular elevator, so deliveries are frequently held up
There are two elevator lobbies, which slows down all elevators, as they usually stop at both.
It is UGLY
And just now, as I was working with the window open (the one good and unusual design feature, though they've messed that up, too, by hinging the window at the bottom so if I open it when it's raining, all the water gets in...) the rope that holds the window washer (who sits on a SINGLE WOODEN PLANK, like a children's swing) got CAUGHT IN THE WINDOW. WHO DIDN'T THINK THAT MIGHT BE A PROBLEM WHEN DESIGNING THIS PLACE???
Sorry, had to rant. But REALLY!
Edit: A photo of the window-washers: