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Fort Nelson Portsmouth


With over 19 acres of tunnels, ramparts and artillery to explore, Fort Nelson is a space where imaginations can run wild.

Overlooking Portsmouth Harbour, this restored Victorian fortress is packed with artillery from across the world. Highlights include a 15th-century Turkish bombard cannon, a gigantic 200-tonne railway howitzer, and the infamous ‘Big Babylon’ Iraqi supergun.

There’s plenty for all ages to enjoy, including free family activities, an onsite café and regularly changing exhibitions.

Free Entry

Term-time: 4 September to 20 October
Open Tuesday to Sunday
10am to 5pm

School Holiday: 21 October to 29 October
Open daily 
10am to 5pm

Portsdown Hill Road,
PO17 6AN
United Kingdom


Fort Nelson is free to enter, book your ticket online in advance to guarantee entry.

For visits between 5th September to 20th October 2023

For visits during October half term 21st to 29th October

Royal Armouries Members can park for free at the onsite car park, non-Members can pay for parking on arrival.