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Date(s) - Sunday 23 Jul 2023
11:00 am - 4:00 pm

The Great Barn, Harmondsworth Barn


Visit the Harmondsworth Great Barn Open Day this Colne Valley Festival Fortnightfree of charge 

Organised and led by: The Friends of the Great Barn at Harmondsworth

Access: The barn is accessible for wheelchair users.

Address: The Great Barn, Manor Court, High Street, Harmondsworth, Greater London, UB7 0AQ

Free parking

Description: Explore this medieval barn on the former Manor Farm in the village of Harmondsworth, in the London Borough of Hillingdon. The Great Barn dates back to 1426 and is the architectural gem of the Colne Valley Regional Park

Rescued by English Heritage after years of neglect, this Grade I listed barn ranks alongside St Stephen’s Hall at the Houses of Parliament for its exceptional timber roof. It was dubbed the “Cathedral of Middlesex” by Sir John Betjeman.

Built in 1426-7 by Winchester College as part of its manor farm at Harmondsworth, the oak-framed barn is an outstanding example of medieval carpentry and contains one of the most intact interiors of its era; over 95% of its structural timbers are original. At nearly 60 metres long, 12 metres wide and 11 metres tall, with 13 massive oak trusses holding up the roof, both its size and aisles evoke the space and shape of a cathedral.

Managed by The Friends of the Great Barn at Harmondsworth.

Free parking available on site.

For more details visit their website here: https://www.english-heritage.org.uk/visit/places/harmondsworth-barn/


Booking Instructions

Free of charge, no booking needed

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