The second building of its name to occupy this location might be the finest flatiron building in San Francisco.

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

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

A little sculpture with a large wardrobe.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

Op-art architecture designed for happiness.

Legends surround an ancient tree trunk riddled with nails for good luck.

Baroque celebration of the end of the Great Plague of Vienna.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

The world's brightest bioluminescent bay.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

Why walk on this historical site when you can zoom down instead?

The most famous location in China was home to whole dynasties worth of imperial rulers.

In the Middle Ages, villagers would sound this stone trumpet to boost fertility and coax fish to shore.

This large round boulder is said to emit spiritual power, but it may just be magnets.

This was once the center of the Birdman cult, and is now a World Heritage Site.

The world's most remote airport.

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

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Two stone columns flank the grand Venice square, but there were supposed to be three.