Underneath downtown Lincoln resides a network of caves that was also the city's first brewery.

Isak Heartstone, a 15-foot wooden troll made out of recycled materials.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.

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

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

Hidden in plain sight on a gable between two towers on the roof of shipping firm F. Laeisz' headquarter in Hamburg sits an unexpected bronze sculpture.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

Many historians today consider Sverre as Norway's greatest king of all time. 

Nordic giants resurrected from the sea and restored to their former greatness.

Old Danish castle immortalized in Shakespeare's Hamlet.

Despite the groans of archaeologists, this astounding groups of Bronze Age petroglyphs have been painted red for tourists.

The rock carving that became an internet meme.

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.

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

These old World War II fortifications have been transformed into an unusual equine attraction.

The world's largest underwater restaurant is submerged off the southern tip of Norway.

The last Viking king of Denmark is buried inside the crypt of this cathedral.

This risqué sculpture, based on a Hans Christian Andersen fairy tale, caused outrage 35 years after it was erected.

After funding was cut for a memorial to the Danish author, the sculptor had his statue ceremonially lowered into the city harbor.

Considered one of the most haunted places in Europe, this 800-year-old castle was home to noble prisoners.

This castle ruin in the middle of nowhere is a gem for wildlife enthusiasts.

Five soviet prisoners of war were executed at this spot just days before the liberation of Norway.

Iron Age grave stones and Viking burials, a short drive from Gothenburg.

Once the center of power for the region's various factories.