Nine limestone rock stacks on Australia's "Shipwreck Coast."

A collaboration of art and ornithology mourns the calls of Sydney's lost birds.

Alien rock formations grown from the sands of an Australian national park.

A clear example of the process of erosion in action.

One of the best beaches in the entire world.

A sparkling sandstone cliffside that's worth a visit while it still exists.

The tallest sea cliffs on the Southern Hemisphere are a climber's worst nightmare.

This gracefully curving formation looks like a massive wave that was suddenly turned to stone.

A castle hand-built by a Spanish dreamer in the Australian tropical jungle.

The lost Latin words were reconstructed using the holes from the nails that once pinned them in place.

These unique markers designate the route American forces took during the Liberation of France.

Live-in sculpture begun by one family in 1979.

On this romantic tidal island reachable only at low tide the tomb of a famous French writer overlooks the sea.

A beautiful lighthouse with as many steps as days in the year, as many windows as weeks, and as many levels as months.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

One of the great treasures of Neolithic art lies within this carefully constructed pile of rocks.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

Fighting the British and making game shows for over 150 years.

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

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

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

Historic medieval fortified city in southwest France.