A prehistoric landscape hidden in the cliffs of Maha'ulepu.

The world's largest indoor go-kart racetrack is hiding in Connecticut.

A massive natural rock arch gives the Tuscan mountain its own window to the sky.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

A Swiss board game museum housed inside a picture-perfect castle.

A fantastical and futuristic temple of light built from nine monumental glass veils.

Did Inca children also slide down these smooth rocky slopes above Cusco?

The 1,000-year-old abbey is the birthplace of modern musical notation.

At 705 feet high, Brazil's "House of Stone" is the largest cave mouth in the world.

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

Why walk on this historical site when you can zoom down instead?

From 135 feet high riders plunge down the world's tallest freestanding body slide at 65 mph.

Locals transformed this Canadian evergreen into a secret hangout with spectacular views of Vancouver's skyline.

This terrifying glass bridge on the side of a mountain cracks as you step on it.

A beautiful waterway tucked in the corner of a power plant.

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

Romans built the world's tallest artificial waterfall in 271 BC.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

Iran's colorful terraces are a rare geological masterpiece.

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

An impressive century-old, to-scale topographical map of Guatemala.

This stretch of the River Severn where large waves flow against the current is the birthplace of river surfing.