The site of Martin Luther King Jr.'s arrest as he attempted to have lunch.

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.

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

Gutted airplanes slowly decay in a Florida field.

It's a pretty creepy lock-up.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

A tribute to Ponce de Leon's supposed quest for eternal youth.

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

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

This demon atop the Notre-Dame de Paris looks utterly bored.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

Go inside to really appreciate this 500-year-old technological masterpiece.

Named for the biblical warrior, the largest castle in Israel actually dates to the Middle Ages.

This dome-shaped mountain boasts amazing views and has a rich religious history.

An iconic view point of the Sea of Galilee offers a look into Israel's past.

An ancient underground cultic temple where sunlight penetrates on the summer solstice.

The maze-like transportation hub contains abandoned areas, derelict stores, and a resident bat colony.

Oldest Protestant church in the Middle East, designed to resemble a synagogue.

Descend 2,030 years into the past in an ancient tunnel built to support Jerusalem's most famous wall.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

The second-highest train station in Europe.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.