To destroy the siege towers and other siege weapons of the enemy army.
To throw large stones and break down castle walls.
A trebuchet is a weapon to break down castle walls and kill the enemy.
Castle walls and fortifications were no longer as big of an advantage as they were in the past. Trebuchets, catapults, and siege towers could all reduce the advantages of walls.
Trebuchets were medieval siege artillery used to throw heavy stones at castle walls and open a breach through which besieging forces could enter. They could also be used to launch projectiles (or a rotting dead cow in a primitive form of germ warfare) over castle walls to weaken and lower the morale of the besieged.
stone walls around a castle are called curtain walls. they are built for defence.
Trebuchets were made in various regions around the world. They were most commonly used in medieval Europe and the Middle East, where they were built by skilled engineers and craftsmen. Additionally, trebuchets were also used in ancient China, where they were known as "huihuiji" and were constructed by skilled artisans.
It was built as a siege cannon, designed to knock down castle walls.
It is a real stone, built into the walls of Blarney Castle in Ireland, built in the 15th century. There are many theories on its origin, before being built into the castle.
to keep urine from over flowing
If built large enough and used properly it could break down castle walls.
The castle garden is usually inside the castle walls. It was a place to grow food in case of a siege. It was not vulnerable like fields outside the castle walls.
Probably to save the smell of cooking wafting through the living quarters of the owner of the castle. Another answer: the smaller buildings inside the castle walls and the floors and supports were usually largely built of wood, and the kitchen was a major fire danger.