Trafalgar Square has been pronounced the finest site in Europe it is certainly the finest open space in the metropolis. Our view is taken from the north terrace, on which faces the front of the National Gallery, a building in the Corinthian style, 490 feet in length From this terrace steps lead down to the area of the square, in which are two large fountains. Beneath these stands the Nelson column, 145 feet in height, erected to the victor of Trafalgar in 1843 by voluntary contributions, with four gigantic lions at its base, which were modelled for it by Sir Edwin Landseer. Among the other statues in the Square is one to the late General Gordon, by Mr. Hamo Thornycroft, R.A., presenting the hero in an attitude of meditation.
source: The Queen's London : a Pictorial and Descriptive Record of the Streets, Buildings, Parks and Scenery of the Great Metropolis, 1896