This is a garden on Anglesey, North Wales. It has been lovingly restored and built over the last 20 odd years by the present owner.
Sadly the stream you can see in the photos became a raging torrent after one of the storms we have had and washed away many of the features. Heaven knows what it looks like now and when it will open again, if ever.
http://www.ideasforgardens.net/palustris/Plas_Cadnent