Info: Wentworth Woodhouse - Wikipedia
"The building has more than 300 rooms, with 250,000 square feet of floorspace, including 124,600 square feet of living area, and was – until it ceased to be privately owned – often listed as the largest private residence in the United Kingdom. It is surrounded by a 180-acre park, and an estate of 15,000 acres." [metric edited out ;-)]
