Welbeck Abbey

House standing in a park of about 1200 ha/2964 acres, in Nottinghamshire, England, south of Worksop. It is the seat, though no longer the residence, of the Duke of Portland. It incorporates minor remains of a 12th-century priory, but its buildings date mainly from the 17th, 18th, and 19th centuries, and are notable for the 19th-century underground rooms and passages built by the eccentric 5th Duke.