Places wefaler Wants to Go

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

A centuries old castle atop a dormant volcano houses museums devoted to both women and witches.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

This cheese shop also houses a museum devoted to Dutch dairy.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

Cat art as far as the eye can see.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

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

A towering monument to war, located on a beautifully peaceful hill.

The skeletal frame of a decommissioned gas-pumping station offers breathtaking views of greater Berlin.

The final resting place of many of Germany's most famous communists.

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

One of downtown Berlin's last reminders of its Communist past.

A 12th-century fortress containing some of Berlin's oldest buildings.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

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

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

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

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

The first American woman to win the Nobel Prize in literature came from the foothills of Appalachia.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

One tiny triangular park commemorates the victims of a yellow fever epidemic—many of whom are buried right below the grass.