Old Danish castle immortalized in Shakespeare's Hamlet.

This Danish rock field is actually a sprawling ancient cemetery holding the bodies of 700 Vikings.

Iron Age "bog person" preserved for over 2,300 years.

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.

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

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

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

A walkable map of the world, made from soil and stone by one man.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

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

Six beautiful wooden giants are hidden around Copenhagen.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

The water here is so clear you can see the mysteriously sunken ship from the surface.

More than 20,000 salt and pepper shakers from across the globe call this museum home.

These ruins disappear beneath the waves every winter.

A crumbling ghost town with prime views of the dam that doomed it.

Once part of an ancient international harbor, it's now an all-you-can-eat shrimp buffet for flamingos and other water birds.

This 700-year-old Cyprus castle is the birthplace of the world's oldest wine, said to be toasted by Richard the Lionheart at his wedding.

An ancient necropolis of magnificent tombs.

This only museum in the world dedicated solely to mushrooms.

Just a few miles from Novalja, a strange geological oddity has left scientists baffled.

Croatia's "hairy stone" fortress is one of the most well preserved Istrian castles.

The remains of a sunken military ship wreck visible through clear water.

Legend has it fairies gathered at the site of this medieval castle.