Metropolitan District Railway

The Metropolitan District Railway, originally established in the late 19th century, was a major early underground railway system in London, now part of the London Underground. It primarily served western and southern suburbs, providing vital urban transportation. Over time, it expanded through underground tunnels and surface lines, helping to connect various districts and easing city commutes. Known for its distinctive logo and deep tunnels, it played a key role in shaping London's transit network, eventually merging with other lines to form a comprehensive, efficient underground system used by millions today.