The Great Barn at Harmondsworth

Rescued by English Heritage after years of neglect, this Grade I listed barn ranks alongside the Houses of Parliament and Westminster Abbey for its exceptional architectural and historic interest. It was dubbed the “Cathedral of Middlesex” by Sir John Betjeman.

Built in 1426 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. 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. Indeed it was described by Sir John Betjeman as “The Cathedral of Middlesex’.

Osterley House

The interior of Osterley House is one of the finest and most complete by Robert Adam still in existence. Popular rooms such as the Entrance Hall and the Long Gallery are open for visitors to see.

A rare survival in Greater London, Osterley Park provides a peaceful retreat with acres of parkland for visitors to enjoy. Bask in the 18th-century grandeur of Osterley’s restored formal gardens with its herbaceous borders, roses and ornamental vegetable beds. Make sure to stop by the iconic Garden House, built in 1780 and designed by Robert Adam.

Entry to the Great Barn is free. Entry to Osterley Park is free to holders of a National Trust, RHS or Art Fund member card. Otherwise it is £18.70 including Gift Aid or £17.00 without Gift Aid.

Full details of the visit to be provided nearer the time.