We pride ourselves on our top quality visitor experience with friendly volunteers on hand to help, and fun trails to keep the children busy.

We recommend that you visit our fantasic cafe and enjoy our reasonably priced home made light lunches and cakes.

We run a schedule of fun and educational events throughout the year, as well as hosting specialist community events, open air theatre and concerts.

Enjoy the stunning views of the Jurassic Coast from the picnic areas on the ramparts and newly-opened terrace, or go underground and explore the many tunnels and secret passageways beneath the fort, including the spooky ghost tunnel.

Learn more of the fort’s historical past and it’s role in protecting the Naval Harbour at Portland from 1860 and how advances in military technology changed the fort until its decommissioning in 1956.

1st September – 2nd November 2025 – Open Daily 10:30am – 4:00pm

5th – 30th November 2025 – Open Wednesday to Sunday 10:00am – 3:00pm (closed Mondays and Tuesday in November)

6th – 7th December 2025 open 10:30am – 3:00pm

13th – 14th December 2025 open 10:30am – 3:00pm

15th December 2025 – 13th February 2026 –  we are CLOSED for essential maintenance work.

14th – 22nd February 2026 – we are open daily 10.30am – 4.00pm for half term holiday activities.

28th February – 29th March 2026 – open weekends only 10:30am – 4:00pm

30th March – 1st November 2026 we are open daily, 10.30am – 4.00pm

As a registered charity we are eligible to claim Gift Aid.

This allows us to claim back 25p for every £1 you give to us, boosting the value of your donation.

All we need from you is permission to reclaim the tax you have paid to HMRC by signing a form on entry into the fort. For more information on Gift Aid, click here.

Online Purchase Terms & Conditions, Click Here