Groups of 20 people or more : 
open all year round, by appointement.

Guided tours :  

1- Sunday, May 1st: from 2 p.m to 6 p.m
2- Weekends of May and June: from 2 p.m to 6.30p.m, except on sunday 15th : 10.30 a.m. to 6.30 p.m.
3- Daily, except all saturdays which are closed, from 1st July until September 16th :
from 10 a.m until 7 p.m (last visit starts at around 6 p.m)
4- "Les Journées du Patrimoine", on September 17th and 18th: from 10 a.m until 7 p.m

Duration of the visit : 50 to 60 minutes.

1- Unusual guided visit, on the military art at the Middle age, on sunday, july 17th, 24th and 31st, and august, 7th, 14th and 21st, at 4;00 p.m.

Duration of the visit : 1 hour 30 minutes.