Memorializing an American tragedy of massive proportions.

A museum commemorating the Donora Smog, which killed 20 people in October 1948 and sparked national outrage over air pollution.

The only working large-scale tea plantation in the United States.

There's an old indoor swimming pool hidden directly underneath the White House Press Briefing Room.

The site of the climactic scene from the classic horror film is now a historic landmark.

Paths are maintained, but trees have taken over plots.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

A quirky Poe-themed joint on an island keen to celebrate its overlooked connection to the famous writer.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.