After a significant cleanup effort linked to last year's Paris Olympics, the Seine River opened to public swimming for the first time since 1923. Three sites in Paris, along with 14 others outside the city, are welcoming swimmers until August 31. Parisians and tourists alike are thrilled with the clean, warm water, although daily water quality tests will continue, with flags indicating safety. The reopening follows investments in sewer systems and water treatment to improve water quality.

Prepared by Emily Rhodes and reviewed by editorial team.