To be privately owned
Lyveden New Bield

Lyveden New Bield is an unfinished Elizabethan manor house located in Nottinghamshire, England. The structure is owned by the National Trust.
History+
The building was constructed around 1604–05 for Sir Thomas Tresham, a Catholic also known for the Rushton Triangular Lodge. Robert Stickells is believed to have been the architect. The manor, situated on the estate of Tresham's second home, Lyveden Manor House, is designed in the shape of a Greek cross and exhibits symmetry. Its facades are adorned with religious friezes featuring emblems and motifs such as the “IHS” Christogram. It included a great hall, a parlor, and a kitchen, but was likely not intended for permanent occupation. It may have served as a “secret house,” a place where the head of the household would retreat for short periods while the main house was cleaned.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Colin Jackson
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 52.4569, -0.5533