A building, a boat, a neighborhood — even a nuclear plant — can become a National Treasure if it has a few key things going for it:
It must have national historic significance. People must care about it. And it must be in danger.
The designation was created in 2011 to help “significant threatened places” across the U.S. identified through the federally created National Trust for Historic Preservation.
Tim Mikulski, spokesman for the nonprofit National Trust, said 62 such treasures have been designated across the country, and the agency is seeking to identify more.