Aerie on the Isle is the capital of the Kingdom of Lanier. It has not had a battle (so far) in the series
On the survival server it costs two million to siege and gives $200,000 per day. For 2 weeks it was sieged. First the pirates attempted and succeeded to siege it. The next week Kerkida successfully retrieved Aerie from the pirates. Finally 2 weeks later the Royal Navy liberated Aerie from the Kerkidians.