The largest bottled beer collection in the world holds over 22,000 unique beer bottles.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

Six beautiful wooden giants are hidden around Copenhagen.

A public display of random paleontology.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.

This secret collection of the strange and occult was rediscovered in a forgotten room of an old house.

An old Danish political institution where members of government can grab a drink off the record.

The art museum is decorated with creatively remodeled pre-Nazi swastikas.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

This Denmark theme park is part family attraction, part experimental archaeology project.

A perfectly circular stronghold constructed in the 10th century is now a nucleus of Viking culture housing a museum, village, and reenactment of an epic Viking battle.

Virgil's many-mouthed gateway to the underworld.

A gorgeous medieval library where the books are kept in chains.

A submerged archeological park still holds the wonders of a Roman Sodom.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.

A preserved dragon's rib that remembers the legend of the founding of the city of Atessa.

Roman-era ships unearthed...

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

The underground sanctuary of a mysterious ancient cult.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.