Visits to Interesting Audible Spaces
From London Hackspace Wiki
There are many places in London that have strange acoustics.
Field trips to visit them are required.
Add your favourite place, and we'll go have a listen.
Places
The Longplayer Project.
A strange musical installation in the Edison Lighthouse in Trinity Bouy Wharf. http://longplayer.org/
[Note: also check out Container City and Ed's Easy Diner while you're there]