London's Only Lighthouse - A Strange Landmark, a Musical Project (BBC)

The strange London landmark that nobody knows

https://www.bbc.com/reel/video/p07np1lt/the-strange-london-landmark-that-nobody-knows

"In the heart of London, on the banks of the river Thames, is a landmark that very few know even exists. It has been there for over 150 years, has acted as an experimental workshop for one of Britain's greatest scientists and today houses a musical project that will last for 1000 years".

Video by Dan John