The last fully functional fortress of Germany's World War II Atlantikwall.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

Historic beer hall in Bucharest with magnificent stained glass and a lively folk band.

This ossuary is more than five centuries old and is heralded as one of the finest in Switzerland.

For centuries no one knew there were hundreds of bones and precious artwork hidden beneath this Swiss church.

The patron saint of spinsters grasps a container of dried blood.

This German museum is devoted to all aspects of grave culture from headstones to coffins.

A museum dedicated to Norwegian music, old and new alike.

Macabre symbols of death and mummies on display set the tone of this Italian purgatory church.

In downtown Oslo, a menacing and terrifying relief clings to a church wall.

An 11th-century runestone decorates the halls of Terminal 2 of this Scandinavian travel hub.

Preserved "bog person" that is over 2,000 years old.

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

The largest brick bridge in the world.

Denmark's famous pseudo-hill.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

The skulls and bones of thousands of soldiers line the walls of this small Italian chapel.

Archduke Ferdinand II's collection of rare objects is considered one of the oldest museums in the world.

This handsomely carved wooden church is more than 800 years old.

This student-run nightclub was originally a World War II bomb shelter.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

Every summer, an open-air swimming pool appears at the base of a Finnish city's beloved winter attraction.

After it was swallowed by a Georgian mansion, this medieval castle remained forgotten for centuries.