This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

This Vietnamese hell cave lets visitors take a walk through a devilish underworld full of demons.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

This remote island village was in danger of depopulating completely until a tunnel was built to connect it to the rest of the world .

This 16th-century house tells the city's history through old artifacts and quirky tales.

A backdoor to Machu Picchu that only the most foolhardy infiltrator would attempt to breach.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

Where once there was a train station bathroom, there is now this German burger joint.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

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

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Famously misunderstood wonder of the ancient world

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

The prototype for all Nazi concentration camps.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

An underground city of salt.

Two stunning 17th-century libraries and a cabinet of curiosities.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.