The initiative follows extensive clean-up efforts and builds on the legacy of the 2024 Olympic Games. The project follows major investments to improve water quality after nearly a century-long ban on swimming in the river.

Credits: Unsplash; Author: Jim Tran;

Three supervised swimming sites along the Seine are open free of charge throughout the summer, with lifeguards monitoring visitors, and swimming remains subject to daily water quality testing and weather conditions. City officials say the initiative has become a popular summer attraction while supporting adaptation to increasingly frequent heatwaves.