Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

Op-art architecture designed for happiness.

Baroque celebration of the end of the Great Plague of Vienna.

The Habsburgs' royal collections of art and wonders.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

The beautiful baroque library of the Hapsburg empire.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

A cheeky architectural easter egg.

Gargantuan home of Russian science.

The tallest hotel in Europe.

It took over half a century but a Russian monument to a famous and tragic space pup finally stands in Moscow.

The Guardian of Tallinn.

A subterranean house of worship carved right out of the bedrock.

Striking occult iconography on a medieval German church.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

In addition to fine dairy products, the world's most beautiful milk shop also offers a feast for the eyes.

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

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.