In the short story Greenshaw's Folly, Greenshaw's Folly is a large country house built by Nathaniel Greenshaw in the 1860s or 1870s. It is located in the vicinity of the town of Boreham Lovell. The house has several turrets (inspired by the châteaux of the Loire), and a Moorish wing. It also bears influences of the Taj Mahal and Venetian palaces.
The name of the house appears to have come from the fact that Mr Greenshaw went (or at the very least, almost went) bankrupt, by spending all of his money on the house. His granddaughter was murdered in the house.