We went to visit this wonderful place in Cornwall today.
It's a treasure of civilisation, a natural space - part garden, part deliberately created exotic forest with plants from all round the world - that was taken to fine heights by the Victorian family who owned it but then slumped into chaos and ruin, until an ambitious and thoughtful project arose some 20 years ago to reclaim its full glory.
Here's the timeline.
No point in my saying anything more. Go and see it for yourself. It's uplifting on so many levels.