Adults: 12 euros, children from 6 to 17 years old: 6.50 euros ; +3 euros for the audio guide.
There are tickets combined with the Sound and Light show as well as with the Maison de la Magie.
Château de Blois
6, place du Château à Blois, France
The castle is open all year except January 1 and December 25. Opening time varies depending on the months, between 9 a.m. (or 10 a.m.) and 5 p.m. (or 7 p.m.).