A uniquely robust and historic look at Mexico's omnipresent dance with Death.

Legends, sculptures, and unique tombs can be seen lurking in these connected cemeteries.

The history of this futuristic crypt-turned-temple is as curious as its facade.

These pillars at the main entrance of this church are actually a hidden musical instrument.

A 2,000-year-old engineering wonder hides beneath an Italian town.

An underwater restaurant, surrounded by a coral reef.

The surviving remnants of a destroyed medieval church now stand in a public park.

This oddly shaped church resembles a rocket.

Located in the thermoelectric factory that once powered the entire city, this Portuguese museum is shockingly fascinating.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A forgotten and crumbling Yugoslav monument to the victims of fascism.

This massive stone and steel monument remembers a century-old battle that cost thousands of lives and nearly destroyed the city.

Space-age monument to an early 20th-century uprising.

A mountain pass in Bulgaria's Balkan Mountains was the site of four historic battles.

This 19th-century ghost town offers a stunning view of Lake Michigan and a journey through the region's industrial past.

All that remains of this once-booming mining town are the ruins of a saloon.

Abandoned businesses, homes, and rusted cars are all that remains of this stopover town.

The ruins of this mining boom town stand like skeletal reminders of the settlement's dark history.

The remains of diamond fever taken over by the desert.

A schooner, nicknamed "The Unsinkable," with a long history of survival in the Indian Ocean.