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.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

The beautiful, fruit-covered facade hints at this building's former life.

The menacing creature had a tremendous influence on the local culture before being exposed as a hoax.

The tomb was guarded by soldiers from both sides of the war, and some left their initials carved in the brick.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

A slab of sandstone covered with mysterious 1,000-year-old rock carvings from a vanished North American culture.