This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

The solemn exterior conceals an opulent interior of this 17th century church.

An exquisite Baroque church in Vienna's old town.

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

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

This former insane asylum now holds a pathological anatomy museum.

The final resting place for the remains of 143 Habsburg royalty.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

A fantastic place to see murals, and an important location in the history of Toronto's legal street art scene.

A collection of more than 12,000 shoes, displayed in a building shaped like a shoebox.

This whimsical fountain pays tribute to Toronto's four-legged friends.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

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

This Czech church doubles as something of a permanent fashion exhibition for a statue of the Infant Jesus.

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

Macabre astrological automaton clock dating to the late 1400s.

One hundred years ago this small house in downtown Zürich became the birthplace of the Dada movement.

A black cat protests the City Guild in Riga's Old Town.

Flamboyant architecture from the turn of 20th century.

3,000 market stands in five former Zeppelin hangars.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

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