over at I Sheep Things spotted this great collection of comparisons between real-life environs and the in-game places that they inspired. Not all of the comparisons are pitch-perfect, obviously (there are no Nagrand-esque floating islands in the real world, and the Crystalsong Forest picture shows trees covered in ice rather than the mystical wood that grows in-game), but lots of the pictures are really dead-on, and they show you really well how Blizzard uses a kind of hyper-realized version of Earth to create what seems like a very real Azeroth.
We've posted before how the architecture of WoW mirrors real-world places and culture, but even the natural world of Azeroth uses lots of Earth's real-life elements. And it would be cool to know where these pictures actually come from -- some of them are recognizable (obviously, Stranglethorn Vale is based on parts of the Amazon, and The Barrens represents Africa's savannahs), but even Icecrown and Zangarmarsh are represented (in slightly less mythical form) on Earth. It would be interesting to know exactly where.