One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

The most powerful waterfall in all of Europe.

"Holy Wisdom" overlooks the city that became its namesake.

A striking symbol of the Bulgarian capital.

This monument to those fallen in the World Wars is accompanied by a U-boat that Germany bought for a Deutsche Mark.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

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

This huge industrial sculpture looks like a UFO and a factory had a baby.

Mounds, rune stones, and a 1,000-year-old church, left behind by Denmark's first two kings.

When this Iron Age bog body was discovered in 1835, it was thought that she had died recently.

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

A natural wonder in south Denmark.

Tiring of digging out the door to this church for every service, it was eventually abandoned to the sands.

An abandoned lighthouse awaits its destiny: being buried under shifting sand.

Teeny tiny hotel on the coast of the Canary Islands.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

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

A model memorial to the original Odin Tower, the second highest tower in Europe before it was sabotaged by Danish Nazis.

An exhibition of preserved locomotives housed in a 1950s depot shows the history of Denmark's railway.

Nearly 40 miles and 1,000 years of limestone mines under Denmark.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

An underground city of salt.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.