This Corsican Neolithic site is full of pre-Roman megalithic structures that may or may not be penises.

France's high-tech, future-themed amusement park.

Glowing orb in Minsk houses 8,600,000 items.

The 20-mile causeway that separates the Netherlands from the sea.

A battle between nature and architecture in the Cambodian jungle.

This bridge made famous in a novel and on-screen wasn't actually built over the river Kwai.

A Sri Lankan tea factory's ironic take on the Los Angeles landmark.

The masses at this church incorporate enough moonshine and animal sacrifice that they are no longer recognizably Catholic.

This unusual piece of Renaissance art depicting the bodily horror of crucifixion and skin disease may have been inspired by fungus-induced hallucinations.

This modern museum of Mediterranean culture is surrounded by a surreal concrete honeycomb.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

This stunning French estate was so lavish that it landed its original owner in jail for the rest of his life.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

The mummified heart of Louis XVII, the lost dauphin of the French Revolution.

The splendor of this 17th century golden chapel has led it to be called the "eighth wonder of the world."

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

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

The world's tallest bridge is also possibly the most elegant.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

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

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.