MINOS+
United States
MINOS+ was a continuation of the MINOS experiment (Main injector neutrino oscillation search) to measure neutrino oscillation with improved electronics. It started taking data in 2013 and ran for 3 years. The experiment ended and a 6-month dismantling project began in early October 2016.
Observatory data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).