Underground, Overground

... Wombling free? Not really! But I was fortunate to have a tour round behind the scenes at the Barbican Centre last night, thanks to a friend who works there. We saw everything from the heat exchangers in the basement (below the water table!), exotic plants in the conservatory, the lighting grid in the theatre (38m/124ft above the stage) and finally the roof, looking out over the City and St Paul's. Even though the weather wasn't ideal, the pictures had to be taken!

Here you can see Underground and Overground for yourself: