The House in the Clouds at Thorpeness on the east coast of Suffolk, a village full of interesting and attractive buildings. This used to be the water tower which supplied the village. It was disguised as a house to fit in with the rest of the architecture, eventually being converted to a real house once the village went onto the mains water supply.
The processing makes the photo look like an illustration in a book of nursery rhymes that I own. This seems fitting, as this house surely belongs in a nursery rhyme.