This opera house along the banks of the Connecticut River has two Tony Awards to its credit but it’s never staged a single opera.

The author of Uncle Tom's Cabin was neighbors with Mark Twain while living in this Connecticut home.

This tribute to the founding father of the American dictionary originally contained a spelling error.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

Mysterious 500-year-old tapestries depict a unicorn hunt.

An Iowa town celebrates its heritage with the tallest working Dutch windmill in North America.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The experimental test tracks of a retro-futuristic monorail still stand in the French countryside.

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

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

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

A quaint medieval millhouse hovers surprisingly above the waters of the Seine.

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

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

In this Parisian garden's grotesque former life as a zoo it fed exotic animals to the bourgeois and put humans on exhibit.

The famous winding walk at Chartres is surrounded in mystery and myth.

Historic medieval fortified city in southwest France.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

Ancient paintings known as the "Sistine Chapel of Cave Art."

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.