fortification
locality types

Cosham Fort, Portsmouth
Fort Blockhouse, Gosport
Fort Cumberland, Portsmouth
Fort Monckton, Gosport
Fort Purbrook, Havant
Fort Rowner, Gosport
Fort Southwick, Southwick and Widley
Fort Wallington, Fareham
Fort Widley, Portsmouth
Lumps Fort, Portsmouth
Portsea Gate, Portsmouth
Round Tower, Portsmouth