Midworld is a courtyard up high in the White Tower. So I guess it isn't technically the battle of Tar Valon. :p Aes's portal is located in a serene garden. The WC's portal is located inside of a ruined inner tower. Aes's base will probably ring a few bells with most WoTers ;) WC I made on my own (cept for the fireplace room, and the altar room).