This building’s ghostly exterior reflects its former lives as a prison, school, and funeral home.

The ornate miniature mansions were built for Istanbul's feathered residents.

Climb atop one of the world's longest and heaviest trains for an unbelievable journey across the Sahara Desert.

A lonely beacon, precariously perched atop a remote sliver of rock.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

In Bermuda, this formal naval residence has become a go-to for cliff-jumpers and hikers.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

A mesmerizing sculpture marks the site where the activist was arrested after evading capture for 17 months.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

Iconic red and white plaques show the creative names invented to navigate the city streets.

An abandoned Cold War missile radar site.

Peruse rare tomes like poetry bound in pearls or books with branches and berries growing out of their spines.

This is what trains will look like after the zombie apocalypse.

Wooden sleds have replaced donkeys to cart goods around this utterly charming car-free village.

This enchanting 600-year-old tree is so magical it inspired the beloved tale of Pinocchio.

A domed disco abandoned since the '70s now attracts artists and explorers under its unique roof.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

A modern mechanical planetary system, part of a 10,000 year clock.