One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

One of the oldest still-working clocks in the world sits on an ancient tower.

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

Where Venice's gondolas go for a tune-up.

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

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

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.

Featuring the last fully walkable parapet walkway in Europe.

The remains of 50,000 World War I soldiers rest under a towering arch overlooking the Alpine battlefields.

Machismo turned on its head: the lady's hand goes to the dude with the bigger brain.

This medieval castle was home to a known tyrant and features several hidden passages.

Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

One of the tallest bell towers in Italy plays a particular melody at just two times each day.

Turtles swim in a pond surrounding a classical temple in this lush park in Vicenza.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

An ode to Japanese artist Hokusai, with a bit of a comical twist.

A single light illuminates one man's overshadowed contributions to street lamp history.

Designed to not only to represent the history of the local community but also, the future.

A lone tower rises above the cliffs in a city park, offering fantastic views of the Connecticut landscape.

The graffitied ruins stand hidden within the Pennsylvania woods.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

There’s a hidden military meme engraved on the World War II Memorial.