Shepherds Bush Roundabout, Blue Thing Explained (finally)

Having stared at it on and off for nearly 10 years, I thought I knew what this odd looking thing was.

Plonked on the edge of Shepherds Bush roundabout, like some giant chemical toilet, I always thought is was simply a solar-powered water feature.

Sun shines, blue water cascades. That simple.

I've also heard many people explain it away as something Thames Water built to reflect the level of water available in London's reservoirs.

But that's not it either. It is called the Thames Water Ring Main Tower (this title may have caused the confusion) and was built in 1994 to celebrate the completion of a giant ring main which serves London.

It is actually a (wait for it) fifteen metre high barometer. So now you know.