[{"n": "Device Forts", "u": "/e/device-forts/device-forts/", "s": "Henrician coastal artillery forts built against invasion."}, {"n": "Beacon Hill Battery", "u": "/e/device-forts/beacon-hill-battery/", "s": "A coastal fort defending Harwich from the 19th century."}, {"n": "Brackenbury Battery", "u": "/e/device-forts/brackenbury-battery/", "s": "Coastal artillery fort that aided radar development in 1939."}, {"n": "Calshot Castle", "u": "/e/device-forts/calshot-castle/", "s": "A Tudor artillery fort defending the Solent."}, {"n": "Camber Castle", "u": "/e/device-forts/camber-castle/", "s": "A 16th-century artillery fort built to protect the Sussex coast."}, {"n": "Cowes Castle", "u": "/e/device-forts/cowes-castle/", "s": "Henry VIII's coastal fort turned Royal Yacht Squadron clubhouse."}, {"n": "Dartmouth Castle", "u": "/e/device-forts/dartmouth-castle/", "s": "A medieval artillery fort defending Dartmouth harbour."}, {"n": "Deal Castle", "u": "/e/device-forts/deal-castle/", "s": "A Tudor artillery fort defending the Downs anchorage."}, {"n": "East and West Blockhouses", "u": "/e/device-forts/east-and-west-blockhouses/", "s": "Two Tudor blockhouses guarding the Milford Haven Waterway."}, {"n": "Gravesend Blockhouse", "u": "/e/device-forts/gravesend-blockhouse/", "s": "Tudor blockhouse defending the Thames approach to London."}, {"n": "Inventory of Henry VIII", "u": "/e/device-forts/inventory-of-henry-viii/", "s": "A 1547 record of Henry VIII's possessions, now in the British Library."}, {"n": "Landguard Fort", "u": "/e/device-forts/landguard-fort/", "s": "Fort guarding the River Orwell, managed by English Heritage."}, {"n": "Mersea Fort", "u": "/e/device-forts/mersea-fort/", "s": "Triangular Tudor fort defending the River Colne."}, {"n": "Milton Blockhouse", "u": "/e/device-forts/milton-blockhouse/", "s": "A Tudor blockhouse defending the River Thames."}, {"n": "Netley Castle", "u": "/e/device-forts/netley-castle/", "s": "A Tudor artillery fort converted into a Gothic private house."}, {"n": "Fort Paull", "u": "/e/device-forts/fort-paull/", "s": "A Palmerston Fort on the Humber, later a museum."}, {"n": "Pendennis Castle", "u": "/e/device-forts/pendennis-castle/", "s": "Henry VIII's artillery fort defending the River Fal."}, {"n": "Portland Castle", "u": "/e/device-forts/portland-castle/", "s": "Henrician artillery fort defending Portland Roads anchorage."}, {"n": "St Catherine's Castle", "u": "/e/device-forts/st-catherine-s-castle/", "s": "A Henrician castle guarding the mouth of the River Fowey."}, {"n": "St Mawes Castle", "u": "/e/device-forts/st-mawes-castle/", "s": "Henrician artillery fort defending the Carrick Roads waterway."}, {"n": "Salcombe Castle", "u": "/e/device-forts/salcombe-castle/", "s": "A Tudor gun battery built to deter French raids."}, {"n": "Sandgate Castle", "u": "/e/device-forts/sandgate-castle/", "s": "Henry VIII artillery fort later converted into a Martello tower."}, {"n": "Sandown Castle, Isle of Wight", "u": "/e/device-forts/sandown-castle-isle-of-wight/", "s": "A hybrid Italian-English Device Fort on the Isle of Wight."}, {"n": "Sandown Castle, Kent", "u": "/e/device-forts/sandown-castle-kent/", "s": "Henry VIII's artillery fort defending the Downs anchorage."}, {"n": "Southsea Castle", "u": "/e/device-forts/southsea-castle/", "s": "Henry VIII's artillery fort defending the Solent and Portsmouth."}, {"n": "Tilbury Fort", "u": "/e/device-forts/tilbury-fort/", "s": "A Thames-side artillery fort with Britain's finest 17th-century defences."}, {"n": "Walmer Castle", "u": "/e/device-forts/walmer-castle/", "s": "Tudor artillery fort turned Lord Warden's residence."}, {"n": "Yarmouth Castle", "u": "/e/device-forts/yarmouth-castle/", "s": "Henry VIII's arrow-head bastion fort on the Isle of Wight."}]