This is not "open to the public." We went with a Stanford tour group and got to see various parts of the buildings, some of which are just below ground level. Very interesting to someone who likes science/physics. It's an older facility and is not that active anymore, but it is still really neat. The photo is SLAC from the air with the 280 freeway near one end of the accelerator. Now you see why it's called linear.
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