A stairway to heaven, or to nowhere at all.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

This futuristic German television spire is actually the world's largest digital clock.

Twisted buildings adorn the banks of the Rhine river.

Largest illuminated advertisement sign in the world.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

An exclusive waiting room built for the royal family in the 1920s is hidden in Milan’s central station.

A Milanese café entirely designed by the American director Wes Anderson.

Da Vinci's equestrian statue, 500 years in the making.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

A Nesting Doll of Churches.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A sculpture serving as an homage to Pope John Paul II.

A 50-foot tile mural mosaic for the 100-year anniversary of the Statue of Liberty.

This "synagogue" is not what it seems to be.

A black and white mural stands out from its psychedelic surroundings.

Church and home-museum of a 1920s female revivalist preacher with a very sordid past.

A cobblestone alley with an interesting past.

The so-called "Statue of Liberty of Los Angeles" is on a one mutant mission to keep L.A. weird.

Dozens of lights dangle from the branches of what may be the brightest tree in Los Angeles.