One of the figures in this Celtic sculpture continues to puzzle archaeologists.

These floating gardens show what Mexico City used to look during the Aztec Empire.

This sprawling, Brutalist estate feels like a city within a city.

An overlooked memorial honoring the local Washington residents who died in World War I.

The Lincoln Memorial has inspired many, even though a word on the inscription appears to be spelled incorrectly.

Red frames showcase remnants of one of New York's original subway stations.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

The most confusing clock in New York.

There must be a pun in this haystack somewhere...

One of only two commuter aerial tramways in the United States.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

Home to a 26-foot-tall statue of an American icon.

The first post office in Toronto still operates today, complete with quill pens and ink for writing letters.

The natural hot spring that was integral to the creation of Canada's first national park.

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

This statue in Civitavecchia recreates a famous photograph from the end of World War II in massive scale.

A tribute to Charles M. Schulz, who created the iconic cartoon that features Charlie Brown, Snoopy, and more.

This historic spot was where America's involvement in the Vietnam War officially came to an end.

Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

Witnesses claim the Virgin Mary statue outside the church once mysteriously shed a single tear.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.

This French colonial post office is arguably the grandest in all of Southeast Asia.

A battle between nature and architecture in the Cambodian jungle.

Bombed and burned, this monument represents the often controversial ties between Vietnam and Cambodia.