A simply stunning building with an interesting history which you can read more about here and here.
The building was completed in 1847 with further additions in the 1850's and 1890's.
Among it's owners as a private residence was one James Watt - of retailer Kendal Milne fame.
Visitors during it's time as a private home included Prince Albert, King Edward VII, Disraeli and Prime minister Gladstone.
Agatha Christie was a regular visitor and wrote two novels during her time there.
It is a simply stunning building that is only open to the public once a year on these heritage open days. The rest of the time it is just used as offices.