A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Solar observatory doubles as a daring display of Expressionist architecture, much to Einstein's chagrin.

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

A two-way chairlift system between Zugliget and the highest point in the city.

The largest cactus farm in Africa.

An unusual bronze bus shelter is actually an art installation commenting on the city's history with the Nazi party.

This unusually shaped mountaintop tower looks like a UFO floating over the city.

Joe Cocker's 1988 concert at this site in East Germany marked a changing sea tide that would eventually lead to reunification.

Tourists often confuse this beautifully ornate former cigarette factory for a mosque.

An engineering wonder at Pillnitz Castle protects a precious 230-year-old flowering shrub.

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

When the rain falls, this drain system turns into a musical instrument.

Giant, friendly pelicans in Central London, the most unlikely of places.