Historic Buildings in Wimpole EstateHistoric Buildings in Wimpole EstateWimpole HallGrade I listed Wimpole Hall is a mansion house, today mainly 18th Century, but the house has 17th Century origins and mid-19th Century additions and alterations. Wimpole RuinsA Grade II* listed Folly Castle built in 1768-70 by James Essex. The 'ruins' at Wimpole are of Red brick with coursed clunch ashlar facing construction.