What to expect on this tour: Explore a Forgotten Station that Hides Within a Station - Journey deep underground and explore the early 20th century former passageways and lift landings from the days of Dover Street station which were last seen by the travelling public in the 1930s. Fascinating wartime stories - Hear how Dover Street played a pivotal role during the Second World War, offering a place for the London Transport Executive Board to safely meet during air raids and helping ensure that the Underground’s operations continued to run. Witness the last 50 years of Evolution of the Underground Network Hear how in the 1960s and 1970s, Green Park expanded to accommodate two post-war lines, the Victoria and Jubilee lines. Uncover Secret Spaces - Step into the impressive large ventilation tunnels that hide behind the platforms. Peer down on the Tube trains through a secret ventilation shaft and get a unique view that is normally closed to the public on the stations’ platforms.