Folklore says this medieval fortress was plopped atop a portal to hell to trap the demons below.

Created as a "model concentration camp" to hide Nazi atrocities from the international community, this former camp-ghetto now holds a museum and memorial honoring the lives lost within.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

Tall columns of volcanic basalt make up this improbable-seeming rock formation.

This unusually shaped mountaintop tower looks like a UFO floating over the city.

Bohemian paradise covered in majestic forests.

Naturally formed rock city in Poland.

Enormous sandstone towers loom within a Czech forest.

This fortress was designed to prevent a Nazi invasion but was never used.

Each spring, residents of this Czech town hoist a 'slain' metal dragon onto the city hall to commemorate a local medieval legend

A natural wonder in south Denmark.

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

Danish observation tower designed to look like a giant beer bottle.

This striking royal residence is the largest Renaissance-style castle in Scandinavia.

Old Danish castle immortalized in Shakespeare's Hamlet.

Ancient burial grounds of the wealthy.

This mysterious runestone embedded in a church wall is linked to the medieval cult of Saint Erik.

The official meeting point for the oddly named governing assembly of ancient Sweden.

It houses the remains of a 17th-century version of the Titanic.

Crooked windswept pines give this old forest an enchanted and magical look.

Swedish skyscraper with a 90° twist.

This chimerical bridge/tunnel appears to dead end right into the sea.

This floating sculpture of ice is a poignant reminder of nature's power.

The design of this beautifully crafted building was inspired by Norwegian glaciers.