Enchanting cave with a river crashing through the roof.

An ornate Detroit church, left empty and ravaged by time.

San Francisco's newly reopened hands-on science museum.

Former abode of notable poet, complete with literary references and stories of ghosts.

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

The first life claimed by this record-breaking peak wasn't lost to exposure or a fall but rather lightning.

From Ancient Rome to WWII, Neupfarrplatz has over 2,000 years of history underneath its main square.

This Orthodox Church's exterior is rather unorthodox.

A fine, large-aperture telescope available for public use.

Oddly shaped rock formation, misassociated with a nearby utopian community.

The newsstand that never closes its doors—well, almost never.

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

Celebrated as a center of civilization, the remains of the ancient city have been nearly destroyed by greed, egoism, and war.

Macabre astrological automaton clock dating to the late 1400s.

A maritime museum holding the remains of Blackbeard's pirate ship.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

For over 80 years, Mayan ruins stood proudly in a most unlikely location.

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

They squeal, they nosh, they look like predators.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

The city-sized home palace of one of ancient Egypt's most powerful rulers gives us a rare look into the lives of the epoch's rulers.

What was once supposed to be the symbol of a shining Afghan future is now a bombed-out ruin.