| Wall Hall | |
|---|---|
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| Location | Aldenham, Hertfordshire, England |
| Coordinates | 51°40′58″N 0°21′25″W / 51.6827°N 0.3569°W |
Listed Building – Grade II | |
| Official name | Wall Hall (The Mansion) |
| Designated | 12 August 1985[1] |
| Reference no. | 1346897 |
| Official name | Wall Hall |
| Designated | 17 February 2000[2] |
| Reference no. | 1001455 |
  Location of Wall Hall in Hertfordshire | |
Wall Hall, originally known as Aldenham Abbey, is a country house at Aldenham in Hertfordshire, England. The main house and several ancillary buildings are Grade II listed. The gardens and parkland are also on the Register of Historic Parks and Gardens of Special Historic Interest in England.
The 18th century building was remodelled and expanded by George Woodford Thelluson in the early 19th century. It was owned by several wealthy men, including Sir Charles Pole and J. P. Morgan Jr. During World War I, a Voluntary Aid Detachment hospital was opened in the garage. The attached Church Farm was used as a hospital in World War II, with the house being used by the War Office Selection Boards, Special Operations Executive and Political Warfare Executive under John Hackett and Walter Bryce Gallie.
It later became a teacher training college and a residence of the University of Hertfordshire before being turned into flats, with the extensive grounds and parkland being used as a golf course.