Marylebone station (/ˈmɑrlɨbən/ MAR-li-bən), also known as London Marylebone, is a central London railway terminus and London Underground complex. It stands midway between the mainline stations at Euston and Paddington, about 1 mile (1.6 km) from each. Originally the London terminus of the former Great Central Main Line to Sheffield and Manchester, which was closed north of Aylesbury in 1966, it now serves as the terminus of the Chiltern Main Line route to Birmingham.Opened in 1899, it is the youngest of London's mainline terminal stations, and also one of the smallest, having opened with half the number of platforms originally planned. It is also the only London terminal station to host only diesel trains, having no electrified lines. From 1967 for many years it was served only by diesel multiple-unit trains (DMUs). It now once again also sees locomotive-hauled trains daily.Two new platforms were added in 2006 to accommodate increases in services and passengers. Marylebone is in Travelcard Zone 1.