The Fortress is open every day.
Closed 1st January and 25th December.
January - February and November - December: 9.30am - 5pm
The Fortress closes at 4 pm on December 24th and December 31st 2019
March - April and September - October: 9.30am - 6pm
1st May - 31st August: 9.30am - 7pm
Last admission 30 minutes before closing.