Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

World's first "penitentiary," meant to be humane, drove men insane.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

The trials and tribulations of marking Poe's grave.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

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

The house where John Wilkes Booth conspired with his co-conspirators.

Only museum dedicated to women pilots, with personal artifacts from Amelia Earhart and other aviatrixes.

The ruins of a lighthouse on the island Amelia Earhart never reached.

Landmark dedicated to the plight of the American Indian in the 21st century.

Memorials and tributes scattered across the university grounds remember a famous national tragedy of the Nixon era.

Indents in the pavement are all that remain from a grisly death machine in Paris.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Supposedly this Ethiopian chapel holds the Ark of the Covenant, guarded by virgins who cannot leave the building.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A terrific purveyor of natural history objects and curios.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

The famous animator's private station house and man-cave was the birthplace of imagineering.

The childhood home of Earth's alien chameleon is a humble Brixton flat.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

This London plaque marks the spot where David Bowie's famous alien made his debut.

The remains of the great moral philosopher reside in a university in London.