Secret hideaway for an alternative beach experience.

The fully functional, submerged Vanuatu Post Office is definitely one of a kind.

It's just another skyscraper, but it's shaped like '90s cell phone.

The king of U.S. high points towers over every other peak on the continent.

A hugely vast Irish landscape of barren rock that stretches for miles.

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

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

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

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

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

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

Once the largest windmill outside of Holland, with enormous 114 foot sails.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

This towering totem holds the title for the tallest in the world but only according to some.

Huge stone depressions which may have acted as an Incan agricultural experiment.

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

The Uros people live on floating reed islands in lake Titicaca.

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

Mystic Incan rock piles three miles above sea level.

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

The last Americana on Route 66.

A Prada store in the West Texas desert that is never open for business.