PARIS, France—Pope Leo XIV on Saturday celebrated an open-air mass in front of hundreds of thousands of faithful in Paris. The Vatican has estimated that 700,000 people have turned out for Pope Leo XIV's Mass at Paris' iconic Place de la Concorde, a sign of the Catholic Church's enduring appeal in the once staunchly Catholic but officially secular country. Key points and original sources are listed below.

• PARIS, France—Pope Leo XIV on Saturday celebrated an open-air mass in front of hundreds of thousands of faithful in Paris. The event came after the pontiff rode in the popemobile along the iconic Champs Elysees to the cheers of vast crowds clutching French and...S1

• The Vatican has estimated that 700,000 people have turned out for Pope Leo XIV's Mass at Paris' iconic Place de la Concorde, a sign of the Catholic Church's enduring appeal in the once staunchly Catholic but officially secular country.S2