Famously misunderstood wonder of the ancient world

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Dramatic river bend surrounds a natural red-rocked pedestal.

A snapshot of the city's fascinating voodoo culture.

The fairy tale castle of the "fairy-tale king."

Medicinal spa created with the discharge from a geothermal energy plant.

The largest crypt ever constructed in France was built in the 11th century on an ancient Druid sacred site.

Peeing dogs guard the Roman hunting goddess atop a fountain at France’s Château de Fontainebleau.

Thousands of flamingos and other bird species flourish in these Camargue wetlands.

One of the most powerful religious centers in the Middle Ages, dubbed the founder of Western monasticism.

This church sits upon a peaceful hill and a long, turbulent history.

A Christian retreat founded to welcome refugees fleeing from the Nazis during World War II.

Guests can stay at a hotel in the former French abbey where lie the tombs of King Henry II and King Richard the Lionheart.

Folklore and history carved into Brittany's coast.

Beneath the city of Lourdes, France is a massive, concrete church.

This ancient theater was once the home of fierce gladiatorial battles.

Walk through living pictures and music in the Cathedral of Images.

This futuristic observatory at the top of the Pyrénées offers unrivaled views.

This bridge was constructed from the rubble of the infamous Bastille.

The 16th-century church was kept in its ruined state as a reminder of the casualties of World War I.

Perhaps the most beautiful of preserved saints, with a little help from Paris.

A centuries-old complex of hand-dug stone chambers has sheltered locals in times of trouble.