What city built the first underground train network?
London Underground 2009 Stock London Underground 2009 Stock The London Underground 2009 Stock is a type of London Underground train built by Bombardier as part of its Movia family at its Derby Litchurch Lane Works, England. A total of 47 eight-car trains have been built for the Victoria line, entering passenger service between July 2009 and June 2011 and replacing the 1967 Tube Stock. It was the first new train on the network since the 1996 Tube Stock entered service in 1997. The trains are part of a £3.4 billion contract awarded by the now-defunct Metronet to Bombardier to supply new trains featuring Automatic
Underground City (Beijing) Underground City (Beijing) The Underground City () is a Cold War era bomb shelter consisting of a network of tunnels located beneath Beijing, China. It has also been referred to as the Underground Great Wall since it was built for the purpose of military defense. The complex was constructed from 1969 to 1979 in anticipation of a nuclear war with the Soviet Union, as Sino-Soviet relations worsened and was officially reopened in 2000. Visitors were allowed to tour portions of the complex, which has been described as "dark, damp, and genuinely eerie". Underground City has been closed for renovation since