In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

Bronze footprints mark the path where a civil rights leader tried to march in peaceful protest before being knocked unconscious.

St. Augustine's record-setting narrow street was designed to protect against pirates.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

A replica of one of the more than 15,000 civilian lookout towers that lined the U.S. coast during World War II.

A vast array of tropical plants collected by a vacationing couple.

This whimsical outsider art wall holds tiny treasures donated by the local community.

This stretch of highway is said to be haunted by ghosts of settlers whose graves were paved over.

Strange beasts lurking in a garden are all that remain of a quirky, short-lived theme park.

Owned by no one but beloved by all, Brownie was a good dog.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

Dubbed the "smallest church in America," this tiny sanctuary was a local grocer's dream come true.

An eerie smiling woman looms above the granite tombstones.

More than a century after her death, Little Gracie Watson remains one of Savannah's most often-visited residents.

This South Carolina water tower is an icon of the city of Walterboro, but it also once served as the county jail.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

Parking garage where Bob Woodward met Watergate source "Deep Throat."

A derelict bit of transportation infrastructure hidden in the woods.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

The first memorial dedicated solely to the Black troops who fought for the Union.

The narrowest house in America is seven feet of pure spite.

Nothing says indulgence like a 1,500-pound chocolate castle.

This university transit system is a 1970s vision of the future.