Of all kinds!
These gardens are of the French type, which means that they are constructed in a very symmetrical way, and they are over 500 years old!
Les Jardins de Cadiot
A more natural garden with some art statues (sorry for the quality of the picture).
These gardens lie on the banks of the Dordogne nea Carsac and have been completely dominated by water. You walk by beautiful little ponds and waterfalls. A special reportage has been dedicated to it in our galery.
Jardin d'Albarede in St Cybranet. http://www.jardins-albarede.com/
There are of course many more gardens, most castles have their own garden.