A 16th-century monastery boasts a lush array of plants native to Mexico’s most biodiverse region.

Pompeii's less famous neighbor is still revealing her secrets.

Former villa and estate of James Deering developed to preserve native tropical forests.

A perfect circle of 24 mysterious holes dates back to prehistoric times.

Beautiful Gothic-inspired lighthouse stands out among the run-of-the-mill striped fare on Bodies Island.

This woodland architectural installation acts as a camera obscura for the heavens.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

This research center for rare prosimians is studying how they sleep to help prolong human life.

New York City's only preserved family home from the 19th century.

Elevated freight railway turned wildly successful urban park.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

Reverend Franzo Wayne King administers spiritual enlightenment through the music of the jazz legend.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

From carts to cars, this leftover Roman bridge in France has managed to survive for centuries.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.