A remote horde of architectural treasures fit for Indiana Jones.

Hidden in a high mountain cave, this hermitage dates back to the ninth century.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

The final resting place for the famed creator and narrator of "The Twilight Zone."

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

A former Confederate hospital serves as a remembrance of wounded and dead soldiers.

A small Richmond island dotted with the remnants of hundreds of years of history.

Located within a historic park, the beacon is the oldest standing structure in Miami.

Over 120,000 curious objects that have shaped our modern world.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

The trials and tribulations of marking Poe's grave.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

A tribute to the life and work of the beloved "Peanuts" cartoonist.

The most unloved grain elevator in Brooklyn was a “Magnificent Mistake.”

A heartbreaking monument showing the last morning in the life of Jane Griffith.

Final resting place of the immigrant who brought artificial seltzer water to America.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

This recipe is set in stone.

A way to take your secrets to someone else's grave.

A beautiful collection of architectural ornaments rescued from demolished New York City buildings.

Records of the dead describe the myriad odd ways people used to die.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.