Where: Chaumont-sur-Loire, France

Constructed: 1469-1481 / 1498-1510

Most important renovation: 1740

Accessible: yes

Important fact:

built on the remains of a 10th century castle that was set on fire in 1465 by order of King Louis XI. The north side of the castle was torn down around 1740 creating an middle square, with an open view towards the river Loire.

http://www.domaine-chaumont.fr/en/chateau-historic-grounds-and-stables/chateau