This stately gateway is an impressive counterpoint to Buckingham Palace, at the opposite end of the Mall (rhymes with 'shall'). On the southwest corner of Trafalgar Square, the arch, named after the adjacent Royal Navy headquarters, was designed by Sir Aston Webb and completed in 1912 as a memorial to Queen Victoria. Actually comprised of five arches—two for pedestrians, two for traffic, and the central arch which is only opened for state occasions—it was a government building until 2012, and even served as an alternative residence for the Prime Minister when Downing Street was under renovation. It is now expected to be turned into a luxury hotel.
The Mall, Cockspur St., and Trafalgar Sq., London, SW1A 2WH, England