Fort Borstal was built as an afterthought from the 1859 Royal Commission on the Defence of the United Kingdom, by convict labour. Construction started in 1875 but was suspended in 1885. The fort was completed around 1895. it was one of a series of four forts that ringed Chatham.
Battle of Aylesford ⓘ battle between Britons and Anglo-Saxons, fought at Aylesford, Kent, England
Battle of Crayford ⓘ 457 battle
Battle of Otford ⓘ 776 battle
Battle of Benfleet ⓘ 894 battle between Vikings and Wessex
Battle of Assandun ⓘ battle fought in Essex in 1016
Battle of Maidstone ⓘ 1648 battle that took place during the Second English Civil War
Raid on the Medway ⓘ Dutch naval attack (1667) during the Second Anglo-Dutch War
Barton's Point Coastal Park ⓘ park in United Kingdom
Bostall Heath Heavy Anti Aircraft Battery (ZS4) ⓘ WW2 anti-aircraft site in Erith
Cold War Heavy Anti-Aircraft Battery lying on land to east of Harty Ferry Road ⓘ scheduled monument in England
East Tilbury Battery ⓘ artillery battery in Thurrock, Essex, England, UK
Erith Marshes Heavy Anti-Aircraft Battery ⓘ ww2 anti aircraft battery in Bexley, London, England, UK
Fletcher Battery ⓘ architectural structure in Eastchurch, Swale, Kent, England, UK
Heavy Anti-aircraft gunsite on Sandpit Hill ⓘ remains of a World War II fortification in Hadleigh, Essex, England, UK
Heavy Anti-aircraft gunsite, 170m south west of the junction of Cedar Road and West Crescent ⓘ fortification in Canvey Island, Castle Point, England, UK
Heavy Anti-aircraft gunsite, 380m east of Northwick Farm ⓘ anti-aircraft mount in Canvey Island, Castle Point, England, UK
Heavy Anti-aircraft gunsite, 380m south east of Butler's Gate ⓘ anti-aircraft mount in Sutton, Rochford, England, UK
Proof And Experimental Establishment, Shoebury Garrison, Old Ranges, Former Light Quick Firing Battery ⓘ architectural structure in Southend-on-Sea, Essex, England, UK
Second World War anti-aircraft battery at Bowaters Farm ⓘ anti-aircraft battery in Thurrock, Essex, England, UK
Slough Fort and wing batteries ⓘ fortifications in Allhallows, Kent, England, UK
World War II Heavy Anti-aircraft gunsite (TS15), 250m east of Cobhambury Farm ⓘ anti-aircraft mount in Cobham, Gravesham, England, UK
World War II Heavy Anti-aircraft gunsite (TS2), 300m east of Chetney Cottages ⓘ anti-aircraft mount in Iwade, Swale, England, UK
World War II Heavy Anti-aircraft gunsite (TS3) at Wetham Green, 460m north of Red Brick Cottage ⓘ anti-aircraft mount in Upchurch, Swale, England, UK
Dummy Battery ⓘ disused gun battery in Kent, England
Grain Wing Battery ⓘ fort in United Kingdom
Bexley Emergency Centre ⓘ civil defence centre in London, UK
Castlepoint Borough Emergency Centre ⓘ civil defence centre in Essex, UK
Chislehurst South East London Group Control ⓘ civil defence centre in London, UK
Dartford Emergency Centre ⓘ civil defence centre in Kent
Gillingham Borough Control ⓘ civil defence centre in Kent, UK
Hollingbourne Second World War Zero Station ⓘ scheduled monument in England
Maidstone Royal Observer Corps Group Headquarters ⓘ British Cold War command centre in Kent
Maidstone Springfields Kent County Emergency Centre ⓘ civil defence centre in Kent
Queenborough Sub Control ⓘ civil defence centre in Kent
Rochester Short Brothers Factory and Public Air Raid Shelter ⓘ underground factory and air-raid shelter in Rochester, Kent, UK
Upminster Report Centre ⓘ WW2 civil defence centre in Upminster, London, England, UK
Vange Anti-Aircraft Operations Room ⓘ British air defence bunker
Gravesend Cold War Bunker ⓘ Cold War control bunker in Gravesend, Kent, England, UK
Greenwich Borough Control Bunker 51C1 ⓘ Cold-war regional control bunker
Eynsford Castle ⓘ castle, now ruinous, in Eynsford, Kent, England, UK
Lullingstone Castle ⓘ historic manor house in the village of Lullingstone in England
Sutton Valence Castle ⓘ castle in Sutton Valence, Kent, England, UK
File:TonbridgeCastle0021.JPGTonbridge Castle ⓘ Grade I listed castle in Tonbridge and Malling, Kent, England, UK
Rochester Castle ⓘ castle in Rochester, Kent, South East England
Leeds Castle ⓘ castle in Kent, England, UK
Hadleigh Castle ⓘ Grade I listed castle in Castle Point, Essex, England, UK
Allington Castle ⓘ stone-built moated castle in Allington, England
Cooling Castle ⓘ quadrangular castle in Cooling, Medway, Kent, United Kingdom