Which were the best Ancient and Medieval siege weapons?

Dec 2011
3,492
Mountains and Jungles of Southern China
#9
Agreed to Pura here,
The Trebuchet was probably one of the most fearsome weapons in the siege arsenal.
I'm not saying that the trebuchet was the most fearsome of all siege weapons, I'm merely making some suggestions about the best ancient and medieval siege weapons.
 
Dec 2011
3,492
Mountains and Jungles of Southern China
#10
Ancient Indian war elephants




I consider them to be the ancient version of tanks. I think they were more similar to siege troops than to cavalry, so I include them on my list.