Death Mountain.
Just, Death Mountain in general. The name makes it sound like it should be one of the last places Link needs to go, or at least the most climactic. As of late in the series though, It has generally been Hyrule Castle or something, and Death Mountain is just a token fire area you might only visit once halfway through the game. This isn't to say it always came last back in the day, but the way earlier games handled it still made the name seem more appropriate for visiting later on.
I don't know, maybe its just me.