In these areas, there may be people doing underground home schooling, but I don't advise you to break the law. (homeschool-guide.com)
At the DESY laboratory in Germany, photographers will view the past and present of particle physics during a visit to the former underground home of the HERA B detector, where new particle detectors are now being built and tested. (press.cern)
A 2 car garage with underground home access -LSB-...] (paradizo.com)