The Large Exhibits Gallery, the impressive central space
of the Imperial War Museum, showing the 'Ole Bill' London
bus, used as troop transport during the First World War; a
V2 rocket; a Polaris submarine-based ballistic missile; a
British 18- pounder artillery piece from the First World
War; a Mark V tank of 1918 and facing the main entrance, a
German mast periscope designed for use behind buildings
and in woods.