Inside this medieval church resides a unique set of murals.

A remarkably well-preserved stage stop from the late 19th century in a remote part of Nevada.

A well-preserved example from a 1920s network of airmail navigation arrows sits near Interstate 15 in southern Nevada.

A tiny slice shop hides down an unmarked hallway in a Las Vegas casino.

The precious-metals strikes dating back to the 1860s are now mostly inactive, but this area has become the United States' only domestic source of lithium.

A perfectly preserved small-town pharmacy and soda fountain that opened in the early 20th century and closed in the 1980s.

A surviving concrete arrow from a 1920s navigational network is preserved right off a modern freeway.

The smallest country in the world.

An eatery for UFO seekers on the Extraterrestrial Highway.

Eulogizing an unknown man's unusual demise.

Odd outsider art installations surround a Gold Rush-era ghost town.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

A small museum showcasing various communication equipment and laptops in the middle of the southeast Estonia countryside.

This Estonian watchtower looks like a big tree with two giant bird nests on it, complete with a "golden egg."

The oldest continuously operating pharmacy in Europe.

The oldest philatelic museum in the United States.

Money may not grow on trees, but it can be dispensed by one.

A memorial to Chinese freedom in the city where American freedom was born.

Large Massachusetts museum dedicated to Armenian history and culture.

Sacks of potatoes, made of cast stone, mark where the iconic potato sheds once stood along the river.

A bronze kitty adorns the grave of the polar explorer who brought the original feline to the Antarctic.

Taumatawhakatangihangakoauauo tamateaturipukakapikimaungahoronuku pokaiwhenuakitanatahu.

Two nations form a rare four-sided border at the peak of a mountain, philosophical questions result.

American soldiers discovered Europe's best one-liner at the end of World War II.