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

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

Secret refuge and museum of the Duke of Florence.

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

This stately estate house features a tower covered in a bright, modern mural.

This bronze statue was erected to honor a small Scottish town's beloved stray cat.

The 10-foot-wide Long Beach home was built on a dare.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

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

3,000 market stands in five former Zeppelin hangars.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

Northern Ireland's Brobdingnagian stepping stones.

The atmospheric road was never meant to be so creepy.

Macabre astrological automaton clock dating to the late 1400s.

Two stunning 17th-century libraries and a cabinet of curiosities.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

A mocking tribute to the past and modern leadership of Prague.

Special benches that play Chopin's music are scattered throughout his native city.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

Five candy-colored villages on the Italian Riviera.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.