Heritage Open Day: Find out more about the grand architecture of Clumber House in Nottinghamshire, almost a century after it was demolished, through historic documents, maps, and artworks this Heritage Open Day. Although Clumber House was taken down in 1938, Clumber Park retains the unique footprint of this once grand mansion inhabited by the Dukes of Newcastle. Manuscripts and Special Collections at the University of Nottingham holds the archives of this powerful family who shaped Clumber Park into the beautiful landscape we enjoy today.