This former insane asylum now holds a pathological anatomy museum.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

The house that took a plunge into the facade of a museum.

The first modernist church in Europe.

The topiary maze at the Habsburg hunting lodge.

A historical convent known for taking in bad luck babies left on its doorstep is now an upscale shopping center.

Get tall with nature's lankiest beasts and their warthog friends at this Kenyan preserve.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A massive underwater sinkhole made famous by Jacques Cousteau.

Rippling sand dunes frozen in the Arizona rock.

An emerald-green grotto just a short trip from Austin.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Three hundred years of preserved Spanish colonial history in San Antonio.

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

Frida Kahlo's childhood home, now a museum of her life and works.

Diego Rivera's massive tiled fountain and failed infrastructure project.

The only castle in North America to ever house European sovereigns.

The biggest drug trafficking passage between Mexico and the U.S.

From Nunavut to Tierra del Fuego, you won't find any lighthouse higher than this one.

A sprawling nature preserve harbors the world's only living dragons.

Exotic, erotic, and esoteric, one artist's live-in Bali gallery brings a splash of color and madness to its surroundings.

One native village in Bali lays their dead at the foot of a holy tree whose natural fragrance seems to hide the stench as the bodies decompose.