A spherical "micro-nation" in the heart of Vienna.

The topiary maze at the Habsburg hunting lodge.

The beautiful baroque library of the Hapsburg empire.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

Across the Pacific in a raft, a museum dedicated to Thor Heyerdahl's now legendary expedition.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Home to three historic ships from the age of Vikings.

This spooky statue sits outside a famous Prague theater.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A surreal statue honoring Prague's favorite literary son.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Sweden's "good old days" painstakingly re-created in a model village.

Stockholm's deepest subway station is also a stunning ecological wonder.

It houses the remains of a 17th-century version of the Titanic.

A little slice of Japan and its aesthetics in London's Holland Park.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Artists and musicians now rule over this former rail station.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

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

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.