This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

New York City's first Modernist house.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

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

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

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

A Manhattan office building is home to the world’s largest chess board.

This one-window stand has been home to a giant vat of slowly simmering meats and an array of unique tacos for almost 50 years.

This Hollywood dive houses a mural painted by the artists who animated its namesake film.

The first green space constructed on an elevated viaduct.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

More than 250 sakes are available in an izakaya hidden in the basement of a Midtown office building.