A museum in England’s Lake District dedicated to the trusty pencil wants you to know the story of their World War II spy pencils.

Colorful umbrella-covered trees in Singapore's Little India look straight out of Dr. Seuss.

A fortified city, home to a remaining population of five families

A 125-meter long "tribute to the Brazilian people."

Pivotal home of Nobel Prize winner Pablo Neruda.

A museum founded to reflect on and remember the human rights abuses under Chilean dictator Augusto Pinochet.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

This red lake 4,000 meters above sea level is home to rare flamingos.

A desert that evokes the surreal.

A seemingly endless landscape of pure salt stretches far across Bolivia.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Macabre astrological automaton clock dating to the late 1400s.

A 4,500-year-old forest is slowly being revealed from beneath the sands of a Welsh beach.

A battle between nature and architecture in the Cambodian jungle.

The largest stone circle in the world has ended up bringing up more questions than it has answered.