The City of Westminster is an Inner London borough that also holds city status. It occupies much of the central area of Greater London including most of the West End. Historically in Middlesex, it is to the west of the ancient City of London, directly to the east of the Royal Borough of Kensington and Chelsea, and its southern boundary is the River Thames. The London borough was created with the 1965 establishment of Greater London. Upon its creation, it inherited the city status previously held by the smaller Metropolitan Borough of Westminster from 1900, which was first awarded to Westminster in 1540.
Aside from a number of large parks and open spaces, the population density of the district is high. Many sites commonly associated with London are in the borough, including St. James's Palace, Buckingham Palace, the Palace of Westminster and 10 Downing Street.