Dr Barnes' $25 billion private collection of art and arboretum.

The first American department store, and home to the largest operating musical instrument in the world.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Mural made of 100,000 pieces of hand blown glass, and one of the largest glass murals in the US.

A layered tribute to the work of mosaicist Isaiah Zagar.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Shop at the 200-year-old store where Julia Child stocked up on copper cookware.

This tank participated in the liberation of Dijon from Nazi occupation.

For over 300 years this little carving has been the city’s good luck charm.

Marie Antoinette and Napoleon Bonaparte were fans of this 200-year-old French chocolatier.

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

A simple plaque on the facade is the only reminder that the treaty ending the American Revolution was signed inside.

This modest marker near Notre Dame identifies the very center of Paris.

Marvel at the opulent Art Nouveau interior while dining on dirt-cheap French classics.

How did a French journalist’s grave become the sexiest statue in the cemetery?

France's most famous cemetery, with some of its most curious tombs.

Indents in the pavement are all that remain from a grisly death machine in Paris.

A tribute shrine where the Space Invasion street art movement started.

Former hunting lodge of a duke who was an avid collector of impressionist works.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

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