The region is characterized by historical Catholicism alongside a highly diverse modern religious landscape shaped by global migration.
* **Catholicism:** The dominant historical faith, represented by stunning architectural masterpieces like Notre-Dame de Paris, the Basilica of Saint-Denis (burial site of French kings), and the Sacré-Cœur. * **Islam:** The region is home to a significant Muslim population. The **Grand Mosque of Paris**, with its striking mudéjar architecture and minaret, is a focal point for the community. * **Judaism:** Paris has one of the largest Jewish populations in Europe, historically centered in the Marais district (the Pletzl) and served by the Grand Synagogue of Paris. * **Other Faiths:** The region hosts numerous Protestant churches, Eastern Orthodox cathedrals (like the Alexander Nevsky Cathedral), Buddhist temples (such as those in the 13th arrondissement and Marne-la-Vallée), and Hindu places of worship.
