On this day in 1890 – London's City and South London Railway, the first deep-level underground railway in the world, officially opened, running a distance of 3.2 mi (5.1 km) between the City of London and Stockwell. 
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On this day in 1890 – London's City and South London Railway, the first deep-level underground railway in the world, officially opened, running a distance of 3.2 mi (5.1 km) between the City of London and Stockwell. 
