Paris in $330s-$360s RT

Sure, it's got the Eiffel Tower and Amelie aesthetic for days. But venture beyond the Champs-Élysées and Montmartre, and you'll find heaps of secret spots that locals keep on the hush, like:

• A 1st-century Roman amphitheater lost to history—yet hidden in plain sight
• An ornate library flanked with intricate mosaics, archways, and over 20 million documents
• A half wine bar half bookstore, where staff recommend pairings of pages and palate
• A museum of forgotten French carnival arts