Famously misunderstood wonder of the ancient world

An exquisite tunnel of cascading flowers.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

Earth's greatest purely vertical drop at 4,101 feet.

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

A vinyl-lover's Shangri-La.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

This disused VLF radio station is no longer in service but the surrounding town still bears its name.

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

This Italian dam is covered in salt-hungry goats who manage to scale its almost vertical face.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The world's most active stratovolcano is almost always erupting.