You can jump teleport into the Aldon tower. Just like with the still not fixed Lowland Keep you can bypass the gate and take over a lvl 3 tier tower with little effort.
Today Arborstone showed me this bug/glitch. Jump against the north wall where it meet the cliff, then teleport on the cliff. Mesmers and Thieves are good with this.
The red circle shows where to jump.
I hope this will be fixed soon, same with the glitch for the keep.