Southsea Sea Defences in front of Southsea Castle set to open to the public tomorrow

The long-waited new spectacular section of seafront near Southsea Castle is set to reopen to the public tomorrow (Friday) featuring new sea defences and vastly improved recreational spaces.

The new sea defences in front of Southsea castle - including the Theatre of the Seaplaceholder image
The new sea defences in front of Southsea castle - including the Theatre of the Sea | Southsea Coastal Scheme

A highlight of the redevelopment is a new split-level, terraced promenade dubbed the 'theatre of the sea' which surrounds Southsea Castle as part of the new-look area stretching from Blue Reef to the Pyramids. The promenade design was also altered to include a historic triangular defence structure designed by the Dutch engineer Bernard De Gomme, uncovered during construction work.

As well as improvements to the promenade, the reinvigorated area has a 1-in-200-year protection from a flood event, thanks to some 145,000 tonnes of rock placed along the seafront.

The team at the Theatre of the Sea in front of Southsea Castleplaceholder image
The team at the Theatre of the Sea in front of Southsea Castle | Southsea Coastal Scheme

The frontage around Southsea Castle - expected to open at around around midday tomorrow (Friday, May 24) - is opening early ready for the upcoming bank holiday weekend and D-Day celebrations.

It is the second section of seafront to be reopened by the scheme, following Long Curtain Moat.

Meanwhile work is ongoing along the next section of the seafront between the Pyramids and South Parade Pier which means diversions for pedestrians in that area will remain in place.

News you can trust since 1877
Follow us
© 2026 Iconic Media Group Ltd. All rights reserved.Cookie SettingsTerms and ConditionsPrivacy notice