The Duchess Theatre is a West End theatre in the City of Westminster, London, located in Catherine Street near Aldwych.
The theatre opened on 25 November 1929 and is one of the smallest West End theatres with a proscenium arch. It has 494 seats on two levels. It is a Grade II Listed Building.
Wikipedia https://en.wikipedia.org/wiki/Duchess_Theatre
Official Website https://www.nimaxtheatres.com/duchess-theatre/
Coordinates 51°30'43.714" N -0°7'11.155" E
