This 1830s store is believed to be the site of Harriet Tubman's first stand.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

This field of concrete was once an active defense site armed with nuclear warheads.

Located at the former Lorton Prison the Lucy Burns Museum tells the story of the 91 year history of the prison including the dark chapter of its involvement in the women's suffrage movement.

The only place for a truly presidential dram.

This church is known as "The Home Church of George Washington and George Mason."

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

A rare example of a medieval house in Rome adorned with a melancholic inscription.

This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

This curious, round temple is the oldest still-standing marble building in Rome.

Remnants of a 4th-century church with vivid medieval frescoes and ancient sarcophagi hide beneath this old basilica.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

A small cell adjacent to this church was once the bedroom for a renowned saint.

These spartan apartments are provided to clergymen visiting Vatican City.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

This unique building in the main square stands out among the city's typically Baroque architecture.

These temples are among the oldest free-standing stone buildings in the world.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

This prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.