After years of preparation, Paris Mayor Anne Hidalgo finally swam in the once-polluted Seine River to demonstrate its cleanliness for the 2024 Olympics. Joined by Paris 2024 chief Tony Estanguet and others, Hidalgo donned a wetsuit and goggles and raved about the water quality. The swim, part of a $1.5 billion plan to improve the Seine, aims to showcase the river's cleanliness for Olympic events and future public use. Despite past pollution concerns, daily water quality tests show recent improvements. The swim, initially delayed due to elections, was met with enthusiasm from spectators and swimmers alike. This historic event marks a milestone in Paris' commitment to cleaner waterways and sustainable city planning.