Metropolitan Railway extension opens

On June 7, 1864, the Metropolitan Railway opened its eastern extension from Paddington to Farringdon, marking a key step in London's underground network. This steam-operated line used broad-gauge tracks initially and helped alleviate surface congestion in the growing metropolis. Key figures included engineer John Fowler, who designed the cut-and-cover method. The extension connected important markets and stations, boosting commuter traffic and setting the stage for the world's first metro system. Its success influenced subway developments globally and demonstrated the viability of underground rail for urban transport.