Old Danish castle immortalized in Shakespeare's Hamlet.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

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

A Belgian self-built tower inspired by the Bible and ancient civilizations.

A luxury hotel housed in a former 15th century Gothic church.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

This house's itty bitty size means no humans allowed.

Vibrant street art created with mixed media.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

The ruins of an ancient stadium that hosted gripping chariot and horse races.

Climb inside an iron crystal magnified 165 billion times its normal size.

Massive galleon from a box-office bomb docked in Genoa.

This German version of Universal Studios holds a vault of treasures from the NeverEnding Story.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.

A beautiful and classically designed villa, with an hourly infestation of monsters.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Medicinal spa created with the discharge from a geothermal energy plant.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

The world's biggest pet store.

No need to strap in for a "ride" on this walkable roller coaster.

The remains of 40,000 humans, meticulously stacked in a tiny churchyard shed.

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