Isle of Farnish: Lake Norwort House
Lake Norwort House is located on an islet at the south end of the lake a few hundred yards above the dam. It was built in the early 1900s by a merchant banker as a summer retreat, and is still in the family (the Smythe-Cohens).
Reached by a causeway from a private carriageway on the slopes of Fling Hill on the west side of the lake, the house is two stories tall, with a three-story tower (and cellar). On the north side there is another entrance, with a dock. To the west is a cobbled courtyard and a lawn.
Farnish's most notorious murder case, that of the Welsh poet Dai Eglwyswrw, occurred here in 1908. [You will have to go to the William Blackstone Wildman detective memoir site to read about this, if it has been published yet -- Grobius]