This ancient cave temple complex is the largest and best-preserved temple complex in Sri Lanka.

To gaze upon the visage of Sri Lanka's biggest Buddha, one must first pass through the Tunnel of Hell.

Huge herds of Asian elephants can be seen walking, bathing, and just chilling at this Sri Lankan park.

An ancient stone fortress considered by many to be the eighth wonder of the world.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Go inside to really appreciate this 500-year-old technological masterpiece.

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

The sunken structure looks like the victim of a catastrophic flood.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

The artist and his brother are buried in a landscape straight out of a van Gogh painting.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Giant naked man on a hillside.

A local museum honors the overlooked discoveries of Mary Anning, one of the first professional fossil hunters.

These ancient sunken lanes were naturally tunneled into the soft ground by countless footsteps.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

The only statue ever crafted by award-winning animator Ray Harryhausen.

Built in the 16th century, the tower is now in ruins.

Described by William Wordsworth as a "World of Wonder."

A dramatic sculpture high up in Yorkshire with vistas on an industrial scale.

An open air haven for tropical monkeys in the damp moors of the English country.

A rotating bridge that carries a little canal over a larger one.