At the very tippity-top of Europe is a cliff from which you can view the midnight sun.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

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

All that is left of this medieval castle is two towers, both of which now display a visible tilt.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

A haunting collection of sunken wooden barges litters this Italian river bend.

Now home to a drinking establishment, this building has a macabre history.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

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

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

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.

A striking memorial recalls thousands of Bolognese men and women killed fighting fascists in World War II.

One of the largest squares in Europe contains an entire artificial island.

In medieval times this small stone seat was used as a bizarre way to punish insolvent debtors.

Featuring the last fully walkable parapet walkway in Europe.

The home of a neoclassical master is now a shrine to his chosen art style.

This artistic temple brings together multiple architecture styles, but is only an example of one.

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

The oldest church in Mantua was buried for centuries under the facades of other structures.

The 1940s structure houses what was once Europe's largest telescope.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This small chapel is built of human bones and decorated with a golden skeleton.