There’s an area under 4 archways, on the way down to the lower concourse, where you can experience an amazing sound effect. If you and a friend stand at opposite ends of the underpass and one of you speaks towards the wall at a normal volume, the other person can hear you perfectly even though you are a good 10 metres away and facing in the opposite direction. The stone walls and ceiling do a great job of reflecting the sound on a path across to the opposite side of the underpass. For more on the cause of this effect, see Whispering Gallery in St Paul’s Cathedral.
Logistics and location
In the lower concourse outside the Oyster bar. Whispering galleries need to be visited when it isn’t too busy otherwise the effect can’t be heard above other noise.
- Site suggested by Charlie Mydlarz
- Photo Nick Gray