Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

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

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

Preserved "bog person" that is over 2,000 years old.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.

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

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

This unique Renaissance castle was turned into a home for Nazi occultism.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

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

Climb to the top of its spiral spire for spectacular views of Copenhagen.

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

A tiny chapel clings to a precipice above Germany’s gemstone capital.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

A fearsome dragon clings to a corner of Munich's city hall.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

The fairy tale castle of the "fairy-tale king."

Art and a pun, all in one.