Open to visitors only during the Eruropean Heritage Days, the water tower of Courson was built in stone around 1640, and is a unique testimony of how to supply water to a multi-storey building, from the 17th century to the present day, before the invention of electricity. Elements of its operation still exist today, including the arena room, the wooden axis, part of the gear wheels, the lead tank...
It has 4 levels: in the basement is the spring water reserve. On the ground floor, called "carousel", an axis was driven by the movement of two mules on a circular paved path. On the first floor of the gear wheels then put in motion pistons allowing to raise the water to the level of a lead tank located on the second floor to a height of 7m, sufficient to feed the castle.
In 1850 the wooden gear system was replaced by a cast iron system and the mules by a steam engine. In 1925 a gasoline engine allows to feed directly the park, without going through the tank.
Until 1975 the water tower provided all the water necessary for the consumption of the castle and continues today to allow the watering of the park through electric pumps.