Down this Cracovian street resides a plaque with a stark message about the city's air pollution.

A statue commemorating a Polish dog who took his role as man's best friend very seriously.

Krakow's own version of the Hollywood Walk of Fame.

This charming, narrow-gauge railway in the Thames Estuary is sometimes referred to as the "Train to Nowhere."

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

The former home of one of the U.K.’s most notable families of suffragettes is now a museum dedicated to women’s rights.

A giant wooden soda bottle pays homage to a distinctly British drink on the very spot where it was invented.

This building's name and a plaque are all that's left of what was probably the most important nightclub of the Madchester music scene.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

Romania's triumphal arch looks out over Bucharest.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

This deconsecrated church has seen many uses, from a tobacco storehouse to a cinema.

A rare remnant of an exposition that took place nearby at the end of the 19th-century.

At almost 1,000 years old, this is the oldest known door in all of Britain.

This pub has roots dating back to 1430 and serves as the setting for multiple Charles Dickens stories.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Venice's island of the dead.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

Go inside to really appreciate this 500-year-old technological masterpiece.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

In the past, Renaissance sex workers were encouraged to entice customers on this bridge.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.