Photo: Michael Hoch (CERN/CMS)
This CMS tracker can be found as part of LHC at Cern. It is made by about 200 square meters of silicon detectors: it is the largest such detector ever built, with the highest number of electronic channels ever put together in such a devise.
If you are living close to an installation like this (there are several huge scientific machine several places on this planet; ESRF in Grenoble, Brookhaven in US etc), you should try to visit. It is mighty impressive to be close to these technological wonders.