Metro station with a claim to rock n' roll fame.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

It's always summer at the beach inside this former airship hangar.

Ruins of a German castle on top of a towering stone pillar.

Over thousands of years, this slot canyon was carved out of the bed of an ancient lake.

This unique zoo is the only place in the world where you can see all 15 species of crane.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

A medieval wash house where people washed clothes in a river allegedly formed by the tears of a mourning nymph.

A contemporary art installation housed within a Gothic cathedral.

This historic electric train has operated with regularity since the early 1900s.

Founded as a refugee camp, now a popular tourist spot.

Traditional 11th-century outdoor tannery.

The ruins of an early-18th-century complex that could once house up to 12,000 horses.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

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

Once the home of a hermetic monk, this cave now houses a small church.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

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