Rooftop view of the north side of Trafalgar Square, City of Westminster, looking east. Trafalgar Square was planned as part of the redevelopment of the West Strand Improvements by John Nash following the passing of the Charing Cross Act of 1826. Although it was to be another 30 years before the square was completed, it occupies the area of the former Great Mews of the Crown Stables. Charles Barry was the architect, although he opposed the decision to erect Nelson's Column on the site - he was overruled. The whole square is Grade I listed, number 1001362. The fountains were remodelled in 1939 to the designs of Sir Edwin Lutyens with sculpture by Sir Charles Wheeler and W. McMillan. The north terrace is balustraded and stone bollards enclose the open space of the square. These features are Grade II* listed, number 1066235. On the north side of the square is The National Gallery built 1832-38 by William Wilkins, to house The Angerstein Collection of paintings purchased by the government for The Royal Academy. The central Corinthian portico is raised on a podium wall with flanking steps and set back behind the portico pediment is a stone cupola dome. The secondary Corinthian porticoes have parapets raised over a central bay. The terminal pavilions have pairs of giant pilasters surmounted by small octagonal stone cupolas with pierced work openings. It is Grade I listed, number 1066236. At the northeast corner of the square is the church of St Martin-in-the-Fields. The earliest reference to the church is from 1222, and Henry VIII rebuilt the church in 1542 to keep plague victims in the area from having to pass through his Palace of Whitehall. By 1710 the walls and roof were in a state of decay, and in 1720, Parliament passed an act for the rebuilding of the church allowing for a sum of up to £22,000, to be raised by a rate on the parishioners. The current church was built 1722-26 to a neoclassical design by James Gibbs in Portland Stone with a staged tower and steeple rising above a Classical Corinthian portico. It is Grade I listed, number 1217661. On the eastern side of the square is Morley's Hotel. Designed by the architect George Ledwell Taylor, and originally developed as apartments, it was built by Atkinson Morley in 1831. In 1850, Peter Cunningham in his 'Hand-Book of London' described it as "well-frequented, and is good of its kind". Sir Arthur Conan Doyle stayed there for some time in 1900, while he was writing The Hound of the Baskervilles, and the fictional Northumberland Hotel of that book may well have been based on Morley's. It was demolished in 1936 and replaced with South Africa House. Trees line the northern terrace and the road has horse-drawn and motor vehicles.