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

A museum of carnival attractions where you are invited to ride the rides.

This lesser-known Frank Gehry building houses a treasure trove of cinema history.

The Sun King's military models, saved from the Louvre.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

This emotive sculpture was originally created for the 1878 World's Fair.

This small, ingenious cannon once helped regulate Parisian life.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

The curious underground history of keeping Paris clean.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the 20th century.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

The narrowest street in Paris.

This hotel was the site of major events in sports and radio history. It was also used as a detention center during World War II.

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

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

Two thousand artifacts from around the world collected by one woman who loved to travel.

The only surviving sidewalk clock in Brooklyn.