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

Explore an eerie, abandoned medieval citadel.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

Since ancient times these picturesque springs have been providing bathers with healing waters.

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

One of the oldest masonic museums in Paris.

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

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

These quaint French houses dangle precariously over a precipice.

The oldest and smallest cemetery in Paris is only open to the public twice a year.

This recessed garden protects thousands of mountain plants by creating its own microclimates.

Monsters and miniatures are held in equal esteem at this wondrous museum.

This stone tower was built to protect Crete from incoming pirates.

Luminaries of all stripes have sipped strong Greek coffee at this cafe since 1839.

An ancient Greek monument and a Byzantine church coexist inside this cave.

After being destroyed by two separate fires, this monastery is now home to a small zoo and relics from dozens of saints.

Dedicated to the god Dionysus, this theatre was used for both musical and theatrical performances.

This church combines Christian, Byzantine, and ancient Greek architectural elements.

A series of waterfalls create the illusion of perpetual rainfall in this hidden gorge.

An intricate network of underground tombs carved into volcanic rock.

The Greek War of Independence was declared at this medieval Byzantine sanctuary.

This Swiss cemetery is reserved for people who died in climbing accidents.