Artist Damien Hirst has bought drawings of landmark building Toddington Manor - which he owns - at auction for £33,600.
The auction house called the manor a "visionary building project"
The 580 drawings were prepared for the reconstruction of the 17th Century building by former owner and architect Charles Hanbury-Tracy.
Hanbury-Tracy later oversaw the commission in charge of rebuilding the Houses of Parliament after their destruction in a fire in 1834.
Mr Hirst bought the pictures at Christie's London auction on Wednesday.
The auction house called the manor a "visionary building project" and had fixed an estimate for the drawings at £30,000 to £50,000.
The Grade I listed 124-acre Gothic-style manor, near Tewkesbury, had been empty for 20 years before Mr Hirst bought it in September to house his personal art collection.
Mr Hirst intends to work with English Heritage to restore the 300-room mansion in the Cotswolds.
The 40-year-old - who reportedly paid £3m for the property - is also expected to live there with his wife and their three sons.