You may have heard whispers about the secret caverns submerged beneath Tower Bridge. No, this isn't an urban myth. The Bascule Chambers are massive caverns where the counterweight swings each time the bridge opens and the only way you've ever been able to get into them before has been on pre-arranged guided tours. Now for the first time they're being opened up to the public as part of Totally Thames Festival and used as a concert hall on September 26 and 27.
Photos: © James Guppy, Flickr
Throughout the weekend, you'll be able to book a slot to hear a new piece by composer Iain Chambers (no relation to Bascule), which will use the sounds of Tower Bridge's lifting mechanisms as one of the instruments in the score. Concerts will take place at 11am, 12.30, 2, 3.30, 5 and 6.30pm, unless the bridge has to open, in which case people will have to scarper to avoid the swinging pendulum of death.
Tickets cost £25 and went on sale today and were still available at the time of publishing. To get yours, call 020 7407 9191 pronto.
Find out more at totallythames.org.