Science tourism
SLAC National Accelerator Laboratory – does experimental and theoretical research in elementary particle physics using electron beams and a broad program of research in atomic and solid-state physics, chemistry, biology, and medicine using synchrotron radiation. It discovered the charm quark, the quark structure inside the protons and neutrons and the tau lepton (3 Nobel prizes). At this time, all public and educational tours of the laboratory have been suspended. SLAC hopes to have them back and asks to check their website periodically for updates.