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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: 15 April to 24 May
Open Tuesday to Sunday
10am to 5pm

6 May Bank Holiday
10am to 5pm


School Holiday: 25 May to 2 June
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.

Book Tickets for 16 April to 23 May 2024

Young people aged 15 and under must be accompanied by a responsible adult at all times.

More information on visitor behaviour and guidance.

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