NOTES: The Post Office (London) Railway Bill was passed by a Select Committee of the House of Lords in 1913 which reccommended the construction of an electric railway with driverless trains to connect the West and East ends of London. Construction of the tunnels began in 1914 and was completed in 1917. The operating equipment was not installed until after World War I and the railway finally opened on 5 December 1927 with parcels traffic running between Paddington and Mount Pleasant. The line was extended to Liverpool Street on 2 January 1928.
NOTES: The Shot Tower, designed by David Riddal Roper, was built for Thomas Maltby & Company in 1826 and remained in use for the production of lead shot balls until 1949, after which it was incorporated into the scheme for the 1951 Festival of Britain on the South Bank of the River Thames. In 1950 the top of the tower was removed and a steel-framed superstructure was added instead, providing a radio beacon for the duration of the Festival. It was demolished after the Festival to make way for the Queen Elizabeth Hall, which opened in 1967.
NOTES: The city of Brasilia was planned and developed in 1956 with Lucio Costa as chief urban planner and Oscar Niemeyer as principal architect. It formally became the capital of Brazil in 1960 and is the seat of all three branches of the Brazilian government. This telecommunications tower was designed by Lucio Costa.