The remains of a historic football stadium that once hosted 50,000 spectators.

This stone spire holds a unique place in the region's history.

A repurposed railway tunnel with otherworldly acoustic characteristics.

This gigantic monument hidden in the woods was built to thank the Dutch for sheltering Belgian refugees during World War I.

Made of 41,900 pieces of mosaic, it took two years to piece together this giant egg.

A grassy pyramid named after a French battle.

This is what trains will look like after the zombie apocalypse.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.

In an area where the remnants of WWI are discovered on a regular basis this preserved frontline trench may be the most amazing.

Because sometimes you need to make a batch of frites even when the stores are all closed.

This monumental mural crafted nearly 40 years ago is still in perfect condition.

Museum in a swimming pool where the water still flows.

This old, abandoned hotel offers magnificent views.

A sublime medieval path adorns the marble floor of one of the most beautiful Gothic cathedrals in France.

These rustic holiday homes are made from discarded fishing boat hulls.

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.

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

A unique zoological park home to over 30 species of wild cats, both big and small.

The first green space constructed on an elevated viaduct.

This small, ingenious cannon once helped regulate Parisian life.

The video game-themed street art first popped up in the French city.

What looks like a normal building is really a hollow facade hiding a subway vent.

The Argonaute submarine was the French navy's pride and joy in the 1950's.

This bridge was constructed from the rubble of the infamous Bastille.