A giant "X" symbolizes the blood spilled from the brutal Juárez drug wars.

Natural catch-basin rocks covered in thousands of drawings spanning many millennia.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

Learn about the last river many crossed to find freedom from slavery in the United States.

Historical structures and natural wonders await visitors to this preserve.

Some North Carolina Cherokee have been keeping their history alive for decades with a single play.

A table rock formation that has been intriguing West Virginians for years.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

Moonbows over Kentucky.

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

This 150-year-old train station and caboose have been turned into a railroad museum, enjoyed by young and old alike.

The hero of the women's suffrage movement birth home is now a museum dedicated to her legacy.

This cemetery served as the only official burial grounds in Cambridge for nearly 200 years.

The homestead of American patriot John Adams.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

Inspiring Herman Melville and Henry David Thoreau, Mount Greylock in western Massachusetts is the highest point in the state at 3,491 feet above sea level.

On top of Gibbet Hill lie the ruins of a lavish turn-of-the-century estate that never quite came to be.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

Friction between grains of sand cause a curious "singing" sound.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

The widow of Benjamin Franklin's brother became the first female newspaper editor in the United States.

The place where Samuel "Slater the Traitor" brought the Industrial Revolution to America.

The second oldest Jewish graveyard in the U.S. is tiny, with connections to George Washington and Henry Wadsworth Longfellow.