Though the city has talked about cleaning up the Seine since the 1990s, the real push came in 2015 when Paris made a bid to host the 2024 Olympics. In that nine-year span, enough

The River Seine in Paris has reopened publicly to swimmers for the first time since 1923 after a century-long ban. The seasonal opening of the Seine for swimming is viewed as a key legacy of the Paris 2024 Olympics, when open water swimmers and triathletes competed in its waters which were specially cleaned for the event.