If you have 6 hours or a half day to spend in Gravesham, here are some suggestions:
1. Visit the historic Rochester Castle and Cathedral. Estimated time: 2 hours.
2. Explore the High Street in Gravesend and take a walk along the riverfront. Estimated time: 1 hour.
3. Visit the Shorne Woods Country Park for a peaceful walk and picnic. Estimated time: 2 hours.
4. Learn about the history of the area at the Gravesend Local History Museum. Estimated time: 1 hour.
5. Take a river cruise along the Thames and enjoy the scenery. Estimated time: 1-2 hours.
Overall, these activities offer a mix of history, nature, and relaxation and can easily fill up a half day in Gravesham.