The weirdest place to put your toilet in?

For me it's the one in Chateau Irenicus. Right between the library and the hallway to the otyugh pit.
I don't know about you but I would hate for my goblin slaves to interrupt me while I'm doing my business. That otyugh-odour would also make it even more foul than the worst back-alley tavern you can think of.
And it's right within reach of those 2 annoying mephits too! Who knows what kind of pranks they are up to?

So what's your favourite place to not put a toilet?