The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

As lake waters recede, a German village reemerges after more than a hundred years.

This mine is home to the largest man-made hole in Europe.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

A ruined castle stands atop a hill surrounded by dragon lore.

Europe's largest dinosaur museum was founded by a passionate autodidact.

The world's longest and deepest train tunnel.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

These spooky and unusual stone formations create an underworldly landscape.

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

A remarkable two-country morph, this town is part of Germany legally but is by all other measures Swiss.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

A Nazi concentration camp and Anne Frank's place of death.

This German museum devoted to the simple wonders of salt is actually built over an old saltworks.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

Morocco’s modern capital was once a haven for Barbary pirates, who went so far as to establish a republic of their own.

A half-mile-long stretch of medieval forts built after a devastating pirate attack persists amid the modern port city.

The location of this historic castle was inspired by a donkey.

The remains of a grand castle that may have inspired Bram Stoker's Dracula.

A Welsh sheep farm provides daily (non-sheep) meals to red kites, producing dazzling displays of aerial acrobatics.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

This architectural oddity is an oasis of green on the outskirts of Valencia.