A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.

This Sri Lankan cemetery is the final resting place of sci-fi legend Sir Arthur C. Clarke.

Three Malay graves are at the center of an annual pilgrimage that reflects syncretic practices.

A quiet patch of astroturf laid out between a building that seems to be splitting in half.

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.

A man-made island in scenic San Francisco Bay.

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.

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

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

A huge musical instrument played by the ocean.

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

A pocket of jungle amidst urban expansion in Panama.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

The toilet-shaped house of South Korea's sanitation pioneer is now a museum to the john.

Known as the "Queen of Beach Markets," Calangute epitomizes Goa's beach flea market scene.

A favorite haunt of Delhi's politicos and intellectuals, this old-school coffee shop was shut down under Indira Gandhi's Emergency.

The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.

An ancient iron pillar in Delhi that seems to be rustproof.

Modest by day, illuminated majestically at sunset.

A palatial sculpture park was built illegally and in secret by a self-taught artist over 36 years.

A ring of soy sauce bottle bases decorate an important Singaporean landmark.