This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

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

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

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

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

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

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

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

This chain of artificial lakes was an ideal test ground for the aircraft that would carry the "bouncing bombs" used by the WWII "Dambusters" squad.

The view from this giant Stone Age toad is unexpectedly beautiful.

This iconic Peak District ridge was once one of the busiest roads in medieval Britain.

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

This millstone commemorates a gruesome tale that may have been the source of the city's name.

Old Danish castle immortalized in Shakespeare's Hamlet.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

An alien church provides much needed silence in the midst of a Finland shopping center.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

The tiny, studious rodents greet visitors to the National Archives of Finland.

Real bones which are said to have belonged to a Polish dragon.

This grubby wall is said to be one of the Earth's esoteric energy centers.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

There has been an astronomical clock on this spot since the 14th century.