An architectural oddity hides in plain sight on this iconic London bridge.

The world-record holder for the longest bridge stretching continuously over water.

A storybook church made from a mesmerizing medley of multi-colored stones.

Dozens of striking Indian symbols cover the second-floor hallways of this rural courthouse.

An abandoned underground bunker not far from downtown New Orleans.

The tallest monument in a historic New Orleans cemetery was prompted by romance and dash of pettiness.

This abandoned mine and power plant was built atop land once given to Revolutionary War soldiers.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

An innovative attempt to break a siege in the American Civil War still scars the earth today.

This bar hosts an ever-evolving napkin art installation devoted to an American president.

Rare recess caves fill this unbelievably beautiful Ohio park.

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

A museum in Mississippi celebrates the history of Coca-Cola and the man who brought it to the masses.

There are more than 4 million bricks inside this unofficial Lego museum in a former middle school.

An elegant sandstone stairway built by the WPA still connects two neighborhoods in Akron.

The oldest operating Mississippi River–style steamboat still navigates the Ohio River.

The airport was once a Civil War battleground, and the earthwork defenses can still be seen today.

An unassuming 13-acre park is home to over 12,000 roses.

The nearly 200-year-old building displays a perplexing grammatical error.

One of the last few period-correct, hand-operated canal locks in the country.

A 19th-century architectural wonder designed by the "father of the skyscraper."

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