I had reason to explore the Underground passageways at Kings Cross station.
If you begin at Battle Bridge Place and go downstairs, keeping your left shoulder to the wall, and continue walking approximately clockwise, there comes a moment when you begin to feel that you are in the large particle collider at CERN.
And if your mind has relaxed to the point of mush, you might begin to think about Cerne Abbas, which is similar-sounding, but very different - notably missing the icle collider, and is therefore just a large part.