The Tower is next to a river somewhere on Etheria. It has changed hands between the Horde and the Alliance several times. In "Roll With It" it was recaptured by the Princesses. It had been occupied by the Horde, before that it had been under Alliance control until The Battle of Bright Moon when the Horde took it while the Princesses were distracted.

Horde occupied tower
Horde occupied tower shot
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