Donjon, Rokštejn Castle, Cezech-Moravian Highlands, Moravia (Czech Republic)

Donjon, (tower i left) it means Last Defense Tower. It was the last place the defenders of the castle retreated when all the defensive zones were broken.
All the property was left in the palace. A steady supply of water, food, arrows and stones was kept on the tower.
But this donjon did not resist. It was dug and burned from the side.