Just as the title say. What is the worst location in any game you have ever played?

I was inspired to make this thread just now, while playing Star Wars: The Force Unleashed. While it is a great game, one location lets it down. The planet Felucia. Both times you go there.

I hate this location with an unrivaled passion. Not only are the enemies annoying as hell, but the obstacles do my head in, the tasks you have to achieve are tedious, and the boss at the end of your first visit (Shaak Ti) just doesn't seem worth the work (she is as easy as anything).

So I would like to know what you guys say.