A traveler could spend all his or her time in Paris visiting famous churches. There are many, and even the lesser-known ones are often beautiful and interesting.

Here are some you might want to visit:

L'Église Saint-Louis-en-l'Île: on Île Saint-Louis, with a distinctive pierced steeple and an iron clock, and a highly ornate Jesuit stye interior.

L'Église Saint-Julien-le-Pauvre: a Greek Melkite Catholic church in the Latin Quarter, not far from Notre-Dame; one of the oldest churches in Paris, with frequent concerts. More...

Interior of St-Julien-le-Pauvre, set up for a piano concert.

L'Église de Saint-Séverin: also in the Latin Quarter, near the Cluny Museum and St-Michel. St Séverin has a 13th century bell tower and beautiful stained glass.

L'Église Saint-Paul Saint-Louis: On the Rue Saint-Antoine in the Marais, built in the 1600s and dedicated to Saint-Louis, King of France.

L'Église Saint-Merri: a small Gothic church near the Pompidou Center with a 14th century bell and a historic organ that was once played by Camille Saint-Saëns.

L'Église Saint-Pierre-de-Montmartre: just around the corner from Sacré-Coeur, this small 12th century church is known for its bronze doors.

Basilique Saint-Denis: Located outside of Paris in the northern suburb of St. Denis, this Gothic Basilica served as a burial site for generations of French Kings. More...

American Cathedral of the Holy Trinity (aka the American Cathedral in Paris): an Episcopal church built in the 19th century that serves the English-speaking population of Paris; located on Avenue Georges V on the Right Bank.

The American Church in Paris: an interdenominational church located on the Quai d'Orsay on the Left Bank that describes itself as "A Beacon on the Seine since 1857."

Tour Saint-Jacques: All that remains of the Église de Saint-Jacques de la Boucherie is the lovely tower, which you can climb. More...

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