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

This stunning concert hall has become a symbol of Iceland's national recovery.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

A wall of chewing gum moonlights as collective art.

A building so large that it has its own weather.

A historic presidential getaway on the continental United States' southernmost island.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A monument celebrating the idea of reaching inaccessible places.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

This quirky curiosity shop takes its cues from the world's bazaars.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

Hear the quietest sound from across the dome.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

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

Copenhagen's celebrated theme park and gardens.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

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

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

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.