The Seine used to be a toxic mess. Now it’s the hottest new swim spot in Paris
- Posted on July 4, 2026
- By CNN
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- 1 min read
The Seine used to be a toxic mess. Now it’s the hottest new swim spot in Paris
For a century, swimming in the dirty Seine was unthinkable. Now, a $1.6-billion engineering marvel has turned the French capital’s river into its ultimate summer escape.