Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

Tiny memorials honor individual victims of the Holocaust.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

At one of Berlin’s oldest churches, visitors can place mosaic tiles to help restore a medieval mural.

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

This classic restaurant features a gorgeous mirror-clad room.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

This curious sculpture represents the perseverance needed to take to the skies.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

An abstract and eyecatching clock/fountain is the centerpiece of this little-known German city.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

Giant wind turbine with observation deck at the very top.

The Suurhusen church tower in Germany leans over farther than the famous Leaning Tower of Pisa.

Thousands of flowers create enchanting pink tunnels over the city streets.

The largest mosque in Germany.

A beautiful Arctic museum and nature center preserves the culture of the Sámi people.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

A slice of central Asia in the middle of Berlin.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

Art and a pun, all in one.