Slight deviation from the trail route, but it is well worth a quick visit. This remaining tower once formed part of Archbishop's Palace, hosting the likes of King Henry VIII.
One of five forts built by Henry VIII to defend London, this one is really impressive. Set at a narrow point of the estuary, it's directly opposite the Gravesend fort …
Cyclable trail to the castle. You might be asked for a ticket if you take the path to Shoreham Road but it should be ok just to cross to the Roman villa