The Royal Air Force Memorial is a 1923 military memorial on the Victoria Embankment in central London, dedicated to the memory of the casualties of the Royal Air Force in World War I (and, by extension, all subsequent conflicts). It became a Grade II listed building in 1958. It is considered to be the official memorial of the RAF and related services. It is sited at Whitehall Steps, near Cleopatra's Needle, between the north-bank ends of Charing Cross Bridge and Westminster Bridge, and directly to the east of the main Ministry of Defence building on Whitehall.