How do you rotate buildings in age of mythology?

Yes you can rotate your buildings in Age of Mythology, but you need to download a Mod. Everything you want or need for Age of Mythology is on a site called Age of Mythology Heaven.

Age of Mythology Heaven Download Page: http://aom.heavengames.com/downloads/

Age of Mythology Rotate Building Mod: http://aom.heavengames.com/downloads/showfile.php?fileid=5456

Copy and Paste the websites into your website search thing.

Hope this answered your question.