This sword isn't waiting for a king to pull it out. It was placed there by a saint.

Take an otherworldly journey in a school dedicated to out-of-body experiences.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

This site is believed to be connected to the oldest house in Arlington County.

A wondrous old library overlooking the nation's capital.

The creek where a shark wreaked terror upon New Jersey, and served as the inspiration for "Jaws."

A building shaped like the Army Corps of Engineers logo, because why not?

A hoard of sky catalogs, astrophysical journals, even the works of Galileo and Copernicus.

A quiet and contemplative oasis in the middle of New York's bustle and riot.

The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

One of the oldest of its kind.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

The first American department store, and home to the largest operating musical instrument in the world.

The oldest surviving botanic garden in the United States.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Where America's first doomsday cult awaited the end of the world.

America's first serial killer rests in anonymity.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

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

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