Biscayne National Park

In Florida's national parks, exhibits that detail slavery, U.S. invasions and the environmental toll of industrialization have been flagged by National Park Service staff for review under a presidential directive called "Restore Truth and Sanity to American History."

Up to 20 staffers have been laid off at national parks in South Florida. At the research center at Everglades National Park, half the team working on restoration efforts is leaving, sources say.

The Department of the Interior is one of the parts of the federal government affected by the current shutdown. But you can still visit South Florida's...