The construction of a tram line unveiled hidden remnants of the old medieval city.

A quaint medieval millhouse hovers surprisingly above the waters of the Seine.

The Church of the Annunciation was carved into the face of a cliff, just like the rest of the town of Haute-Isle.

A 2017 crowdfunding campaign saved this historic castle from being destroyed.

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

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

One of the largest ochre quarries in the world, hidden in a limestone landscape.

An isolated 17th-century chapel on a remarkable site once dedicated to Celtic sun worship.

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

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

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

A chapel on a volcanic core, marking the end of a successful journey.

The deserted pirate-themed restaurant still entices explorers.

An ancient monastery, a locked room, and a mysterious book heist.

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

The sunken structure looks like the victim of a catastrophic flood.

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

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

The world's largest reflecting pool is just two centimeters deep.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

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

The fantastic architectural models of a French traveler.

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

The artist and his brother are buried in a landscape straight out of a van Gogh painting.