Giant Steel Hangar Built Over Chernobyl Nuclear Exclusion ZoneThe new shelter is the largest movable land-based structure ever built and will keep the doomed nuclear reactor safe for another century.Giant Steel Hangar Built Over Chernobyl Nuclear Exclusion Zone02:28Link copiedNov. 30, 2016, 2:26 PM UTC / Updated Nov. 30, 2016, 2:26 PM UTC