It is a very long and difficult and steep uphill trek to this castle. Do not attempt it if you have mobility issues. Our complaint is that we made it up to the top only to find that it was CLOSED! It only opens in the summer for specific exhibitions. We did not see the sign at the bottom by the car park mentioning this in small print - not obvious at all. Also what is their definition of summer?! It is not explained on the internet links either. I have compromised on 3/5 because the castle is attractive and the views over the valley and mountains are really good! I recommend a much more obvious sign saying CLOSED with clear date information.

I like the structure of this castle one of the good castle of Aosta valley there's an event sometimes inside and you need to do a booking it has a nice view of Chatillon and Saint Vincent I go with my dog outside the castle and we play and enjoy the beautiful view.