Mansion House, Old Warden Park

It was designed by the prominent Victorian architect, Henry Clutton, in the Jacobean style, built in ashlar stone and was completed in 1876.

[3] During the Second World War, the house was a Red Cross convalescent home and auxiliary hospital for airmen.

[6][7] In November 2012, the Heritage Lottery Fund awarded a grant of £2.8 million to restore structures in the grounds including a Swiss Garden which was created by Robert Henley-Ongley, 3rd Baron Ongley, in the early 19th century, to exhibit Alpine scenery.

[8][9] The house is a venue for weddings, corporate events, product launches, conferences, afternoon tea, and as a filming location for period dramas.

[3] It is open to the public on selected event dates, including six Sunday airshows and Flying Proms.