Dates in Underground history

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1860-1869 Metropolitan and Metropolitan District lines open. < xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

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1880-1889� Extensions out to the north-west and south-west suburbs.

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1890-1899 City & South London Railway. Waterloo & City opened

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1900-1909 Five lines opened: Central, Northern City, Bakerloo, Piccadilly and Charing Cross Euston and Hampstead

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1920-1929 Northern line extensions

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1930-1939 Piccadilly line extensions

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1940-1949 Central line extensions

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1960-1969 Victoria line opened

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1970-1979 Jubilee line opened

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1990- Jubilee line Docklands extension opened