I've lived very close to this for many years and this is the first time I've ever thought to go and look. Apparently an 18th century summer house, sadly it's now fenced off and access to it isn't possible, which also meant taking photo's was difficult, so these aren't as good as I was hoping they'd be. Luckily I was able to get the drone in the air and carefully (so many trees and branches to avoid) get a more unique view of the decaying building.
20190419-DJI_0069 by Craf00, on Flickr
20190419-DJI_0072 by Craf00, on Flickr
DJI_0055 by Craf00, on Flickr
20190419-DJI_0067 by Craf00, on Flickr
20190419-DJI_0052 by Craf00, on Flickr
20190419-DJI_0051 by Craf00, on Flickr