how many steps to the top of st pauls cathedral
St Paul's Cathedral Above the keystones of the arches, at 99 feet (30 m) above the floor and 112 feet (34 m) wide, runs a cornice which supports the Whispering Gallery so called because of its acoustic properties: a whisper or low murmur against its wall at any point is audible to a listener with an ear held to the wall at any other point around the gallery. It is reached by 259 steps from ground level.