For me, it would be the Large Hadron Collider
It is the most expensive and complex scientific machine ever built. The above image is just one of the detectors (ATLAS).
Wiki:
It is the most expensive and complex scientific machine ever built. The above image is just one of the detectors (ATLAS).
Wiki:
- LHC: http://en.wikipedia.org/wiki/Lar...
- ATLAS Detector: http://en.wikipedia.org/wiki/ATL...