The Hammersmith & City Line is a line on the London Underground that runs between Hammersmith in west London and Barking in the east. It is known for its pink color on the Tube map and serves several key areas, including White City, Shepherd's Bush, and Liverpool Street. The line was first opened in 1864 and has undergone various extensions and upgrades over the years. It connects with several other Underground lines, making it an important part of London's public transport network. The Hammersmith & City Line is particularly useful for commuters traveling to and from central London.