Greenway is OPEN! You can now visit Agatha Christie's private riverside holiday home owned by the National Trust. (Opening times Wednesday to Sunday 10.30 - 5.00 plus Tuesdays 21 July - 30 August). The house is filled with a myriad of family collections and surrounded by a garden of romantic wilderness. "Dead Man's Folly" was set in The Boathouse here. The ferry ride from Dartmouth is a treat in itself and, as a 'green way" of transport, gives reduced entry.