A public park off the beaten path with a beautiful waterfall and 13th century Cistercian abbey.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

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

Despite being considered a thoroughly American sport, basketball's oldest surviving playing field is found in the basement of a Paris YMCA.

A medieval military street hidden beneath a charming French fishing village.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

A mosaic-tiled house built by graveyard sweeper Raymond Isidore.

These quaint French houses dangle precariously over a precipice.

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

Two small chapels housed inside an ancient tree.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

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

This stunning natural double arch, the largest in the Alps, went undiscovered until 2005.

This massive blockhead sculpture hides an entire library.

A Gothic cathedral created from volcanic rocks.

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

Historic medieval fortified city in southwest France.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

Hundreds of hidden passageways weave through the old quarters of Lyon.

A cave dwelling that was started by the Celts, expanded by monks, and finished by knights.

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

Ancient paintings known as the "Sistine Chapel of Cave Art."