Built by a king and rebuilt by an emperor, this aqueduct transported water for 1,200 years to this ancient Mediterranean hub.

Neighborhood in Jerusalem is home to the ultra-orthodox haredim.

As the Dead Sea continues to deplete, massive sinkholes open along its banks.

A magical oasis in the middle of the Negev Desert.

A "miracle" that seems to produce more holy fistfights than holy revelations.

The first official clock in North America, it kept time for the Spanish government of Santo Domingo.

Built in 1512, the oldest cathedral in the Americas.

The oldest colonial fortress in the Americas was once the home and later prison of Christopher Columbus.

A half-buried vehicle in Prague's is the latest iteration in a long-running piece by Czech artist David Černý.

Local folklore claims that this wall was not built for defense, but to provide labor during a time of famine.

Tucked away in a Prague park, a statue beloved by romantics honors a poet so nice they buried him twice.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

This automated sculpture of two men peeing will spell out text messages with their micturition.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

A series of playful yellow penguins share a serious message about the environment.

A grumpy old water goblin guarding an old mill on the Devil’s Stream in Prague.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

Countless grotesque faces stare out from this eerie Prague art wall.

The medieval "Bearded Man" relief still serves as a clever flood warning marker.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

A copy of the famous bus used during the filming of 'Into the Wild' is on display at an Alaska brewery.

This mile marker stands at the unofficial end of a highway built to defend the United States from a Japanese invasion during World War II.

This whimsical stacked cabin looks like something out of a children's book.

The king of U.S. high points towers over every other peak on the continent.