I recently visited The Walled Nursery again, it changes each time I visit. The new owners are constantly working on renovations of the glasshouses, it's a huge task but they look amazing. The garden/nursery houses 13 Victorian glasshouses including a Melon House, Vinery, Fernery and Peach House.
They also have a museum which I always find interesting to look around. It houses old tools and artifacts, some linked to the history of the estate.