Stones pushed off the top of the wall by Romans, before giving up on trying to destroy this wall -
http://www.youtube.com/watch?v=A2QKkcUNylg
https://www.youtube.com/watch?v=A2QKkcUNylg (https://www.youtube.com/watch?v=A2QKkcUNylg)
Foundation stones -
One of the largest construction stone in the world, 570 Tons -
http://www.youtube.com/watch?v=paL6rGqzO84
https://www.youtube.com/watch?v=paL6rGqzO84 (https://www.youtube.com/watch?v=paL6rGqzO84)
http://www.youtube.com/watch?v=w-lIaRTRDv0
https://www.youtube.com/watch?v=w-lIaRTRDv0 (https://www.youtube.com/watch?v=w-lIaRTRDv0)