The 3rd and 4th arrondissements of Paris, thought of as the "historic district." This is also part of the old Jewish Quarter of Paris. As Toni Kamins describes it:
"The city’s most famous Jewish neighborhood is in the Marais and is known as the Pletzl – Yiddish for little Place. This 4th arrondissment district (Metro: St. Paul) has been home to Jews on and off since the thirteenth century. Today, though gentrification has made this one of the city’s most fashionable quarters, it is still heavily Jewish and has been for nearly one hundred years."