Mystic Incan rock piles three miles above sea level.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

2300-year-old Roman road connecting the empire.

Whitewashed mosque contains the world's largest carpet.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

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

A former steam-powered mill from the 1800s is now an industrial park with a giant steel dragon slide.

Stunning views over Ontario's old-growth pine forests.

Remnants of cone-shaped fascist bomb shelters in Milan.

A sharp bend in a dramatic river canyon cut through red rocks.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Come for the flowers, stay for the bats!

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

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

Quite simply the largest tree in the world (by volume).

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

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

A valley of unique erosion patterns lends to a view like nothing on Earth.

The famous winding walk at Chartres is surrounded in mystery and myth.

Pilgrimage site for star-crossed lovers.

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

Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.

The only pollutant in the clear blue water is sunscreen.

WWI hospital ship lost in a cyclone turns up on the coast of Fraser Island, where she remains rusted and forgotten.