Berkeley Square /ˈbɑrkliː/ is a town square in the West End of London, in the City of Westminster. It was originally laid out in the mid 18th century by architect William Kent. The square is named after the noble Gloucestershire family of the same name whose London home, Berkeley House, had stood nearby until 1733, and had served as their London residence when they were away from their ancestral Gloucestershire home Berkeley Castle.