About Harmondsworth Great Barn
Historic Architecture, Architecture, Interesting Places, Other Buildings And Structures
Harmondsworth Great Barn (also known as Manor Farm Barn) is a medieval barn on the former Manor Farm in the village of Harmondsworth, in the London Borough of Hillingdon, England (previously part of the historic county of Middlesex). It is north-west of fields and the A4 next to Heathrow Airport. Built in the early 15th century by Winchester College, it is the largest timber-framed building in England and is regarded as an outstanding example of medieval carpentry. It was described by the English poet John Betjeman as the "Cathedral of Middlesex". A similar though smaller barn is part of the Manor Farm complex in Ruislip.