Southsea Castle

Southsea Castle is a coastal fortification in Portsmouth featuring a square keep with bastions positioned to the south and north. The structure includes eastern and western platforms where cannons were mounted for coastal defense.

Henry VIII commissioned the castle in 1544 to protect England from mainland invasions, funding it through proceeds from the dissolution of monasteries. The fortress remained active in England's coastal defense for centuries afterward.

The castle displays military artifacts and historic weaponry that reflect Portsmouth's role in defending England across several centuries.

The castle is typically open from April through September with free admission to the grounds and exhibitions. Expect coastal winds along the shoreline and wear comfortable shoes for exploring the grounds.

Henry VIII witnessed the sinking of his flagship Mary Rose in 1545 from this location during a naval battle. The vessel went down quickly, highlighting the dangers that threatened England's coast even from within its own fleet.

Location: City of Portsmouth

Inception: 1543

Part of: Device Forts, Portsmouth Palmerston Forts

Address: Clarence Esplanade, Southsea, Portsmouth PO5 3PA

Opening Hours: April-September 10:00-17:30

Website: https://southseacastle.co.uk

GPS coordinates: 50.77800,-1.08888

Latest update: December 7, 2025 20:40