A dangerous narrow-gauge railroad once traced a route through this striking canyon.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

Today this former Nazi concentration camp stands as a poignant memorial to the victims of fascism, and a warning from history.

This ruined fort and statue are a testament to the last king of Kaua‘i’s savvy diplomacy skills, which briefly brought Russians to Hawai‘i.

This giant pocket watch is the third iteration of a local landmark that has been standing just off the Santa Fe Plaza for over 100 years.

This grand Spanish-Cuban restaurant has been serving customers for more than a century.

This church houses the tomb—but not the remains—of St. Nicholas, the likely progenitor to Santa Claus.

A 1940's shrine dedicated to drowned fishermen on the outskirts of Honolulu.

This unassuming riverbank is Missouri’s first designated site in the National Underground Railroad Network to Freedom.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

Created as a "model concentration camp" to hide Nazi atrocities from the international community, this former camp-ghetto now holds a museum and memorial honoring the lives lost within.

Named after the German word for "a longingness to travel," this park brings together thousands of city and street signs from around the world.

During the 19th-century, this park was a vital trading fort.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

Giant works of art interspersed throughout meadows and woodlands offer a new discovery at every turn.

This sculpture forces visitors to confront their relationship with space.

An ancient fortification lives on in this Chinese city.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

A secluded, little-known temple hidden amid the dense jungle.

Eat your Big Mac in a DC-3.

One of the world's earliest skyscrapers.

Although resembling a grand Buddhist temple, this structure is actually the largest mosque in China.

An eerie reminder to the horrors of World War II.