Ok, so at the same time as the Debs balancing pic I also photographed the north porch arch and the windows and by inverting the images - well.
I don't know if you have read any of the supporting text on the website but I do have this thing about finely balanced vessels especially in porcelain - I know calling them vessels can sound a bit pretentious but I get a kick out of throwing delicate and unnervingly fine based pieces.