Londonderry House
Coordinates: 51°30′20″N 0°9′1″W / 51.50556°N 0.15028°W
Londonderry House was an aristocratic townhouse situated on Park Lane in the Mayfair district of London, England. The house served as the London residence of the Marquesses of Londonderry. It remained their home until its demolition in 1965.
The house was bought by the Earl of Holderness in the 1760s, when the earl is thought to have acquired the building next door as well, but at a later date. He subsequently joined the two so that the house became a double-fronted London Mansion.
The residence was purchased in 1819 by the 1st Baron Stewart, a British aristocrat, to serve as a home whilst the family stayed in London during the annual social season. Soon after the purchase, he began redecorating and spared no expense, as shown by his choice of architects: Benjamin Dean Wyatt and Philip Wyatt. Lord Stewart became the 3rd Marquess of Londonderry in 1822. The family also owned the palatial Wynyard Park, County Durham, and Mount Stewart in the Province of Ulster in Ireland.
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