The Martello Gun fort was built in 1850, and used from then to the end of the WW2 as a defence
position for the Medway River and the Thames Estree.
It is approx
half a mile from the shores of Isle of Grain. This very large offshore position had 2 massive gun batteries in place
on mid and upper decks for anti-ship weapons. Also on this tower were some smaller ACK-ACK gun positions, which where used
for air defence against incoming enemy aircraft. This gun fort has 1 watchtower that is built on the very top-deck,
and on the mid-deck is what seems to be a control room for the gun batteries. Attached to the side of this gun fort
are the WW2 living quarters, these living quarters are built on stilts and is linked to the main gun fort by a bridge.