A quaint Russian village in the middle of a German metropolis.

A German artist built a home and garden filled with whimsical art pieces, like a massive, operational volcano.

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

This unique architectural wonder is home to luxury apartments.

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

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

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

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.

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

The largest of Denmark's seven mysterious round churches stands on an island in the Baltic Sea.

A whimsical sculpture garden right out of a children's storybook.

One of the longest footbridges in Europe.

The lost American era of gunfighters, bandits, Indians and steam trains is recreated in Sweden.

A replica of the beloved character's house, modeled after the author's own drawings.

A Chinese meditation center in the middle of rural Sweden, partly funded by a member of ABBA.

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

Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.

An extensive network of secret tunnels was created for the Nazi project "Riese."

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

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

A unique configuration of blown glass can be found inside this hotel lobby.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

A slice of central Asia in the middle of Berlin.