> Eynsford in Kent is great - castle, roman villa, hope farm and riverside forest. Easy from Peckham Rye I see you can't now actually go onto the castle site (looks like just a few wall remnants) as "Due to vandalism the site is closed until further notice", according to its English Heritage page. Though, as you say, Lullingstone is very close. And Down House is only a short ride from there. I have done DH by bike from ED, but train can get you most of the way.