The Williamson Tunnels Heritage Centre will close for Christmas at the end of the day on Sunday 15th December 2019. The Centre will be open from 10am until 5pm (last admission 4pm) on the 27th, 28th, and 29th December 2019. Normal Winter opening will resume on Thursday 2nd January 2020. Tours last around 45 minutes. Last admission 1 hour before closing.