While watching the Formula One free practice two at the Shanghai International Circuit in Shanghai, China, I noticed something very interestingly green involving what seems like a railroad station. As the helicopter flew over giving a view of the track, just off to one side, I noticed a large, well designed garden that at first looked to be at ground level. As the camera view went more to the side, it became apparent that the garden was in fact on top of what appears to be a rail station. A nice alternative to "paving paradise and putting up a parking lot"!
Garden on extreme left middle in top photo. Note rail yard and lines entering structure: