August 2007:
I've just got back from a few days in Northumberland and encountered these rather Myst-like structures (click on the images for the full-size pic - about 3MB each):
Close-up showing the water disappearing down the middle:
The "mirrored" top is actually the water source:
Steps going down inside this one:
And here's a video clip of it.
An overflowing champagne glass?:
Reminds me a little of the Hood fountains. Pity you can't really see the water clinging to the hemi-sphere:
The following were taken in the grounds of Paxton House, which is actually in Scotland, but a good drive and pitching wedge would make it into Northumberland from this site:
From the distance - This looks odd?: