The massive gardens and office of a Brazilian sculptor.

A museum showcasing the history of sugarcane with a rich history.

Cathedral carved out of salt, located a mile below the earth's surface.

A bright little alley in La Boca is a part of tango history.

A charmingly old-fashioned reminder of the historic building's former life.

A Korean village where times stands still.

Man-made waterfall is the tallest in Mainland China.

In its continuing quest to recreate famous parts of the world in miniature, China now has its own ghost Paris.

One of the world's largest malls has been almost completely empty since its opening.

An out-of-place slice of France, smack in the middle of Shanghai.

Pivotal home of Nobel Prize winner Pablo Neruda.

A beautiful deserted greenhouse in the middle of a park.

Occult books, tarot, oddities.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

A marvel of Byzantine engineering under the streets of Istanbul.

Moonbows over Kentucky.

An underground city of salt.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The middle finger of modernity.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

Venice's "Island of the Mad."