One of the oldest and largest wooden churches in France was very evidently constructed by shipbuilders.

A bridge that dates back to the 12th century is said to have made the devil very angry.

Every half hour, the flow of this unusual spring cycles between a rush of water and barely a trickle.

A fortified palace in the shape of a ship on the Thiou river.

Today this former Nazi concentration camp stands as a poignant memorial to the victims of fascism, and a warning from history.

The home where the famous astrologer wrote some of his most telling prophecies.

France's third-largest necropolis offers a peaceful respite from a busy port city.

A quaint medieval harbour where Benjamin Franklin landed in 1776.

This 5,000-year-old tomb once had its own hinged door.

The remains of this ornate chapel now act as a portal to a cramped French cemetery.

A fortress on this island housed the mysterious prisoner known as the "Man in the Iron Mask" for more than a decade.

The precise origins of this pink sandstone temple are unknown.

This 12th century, partially destroyed, abbey has had several owners and was seized during the French Revolution.

This bunker in northern France was built by Nazi German forces with the intention of launching up to 50 V2 rockets at London each day.

A functioning Roman-era aqueduct and bridge in rural southwest France.

The experimental test tracks of a retro-futuristic monorail still stand in the French countryside.

The castle where the Marquis de Sade lived out his darkest fantasies.

This former limestone quarry is now a subterranean wonderland of grand stonework.

Immortalized by artists, this church incorporates a medieval lighthouse into its shoreside structure.

The first modern cemetery of Lyon is complete with more than 200 chapels and monuments.

Shattered columns and Egyptian pyramids outside of Paris.

This historic stone gate tower is now just a lonely relic in the middle of a swamp.

France's highest manned weather station is the only one still inhabited by meteorologists.

The man who introduced reinforced concrete to the world demonstrated its genius by using it to build his own house.