The River Seine in Paris was shut down due to pollution concerns just a day after it was declared safe for swimming for the first time in over a century over the weekend. Swimming spots located near iconic Parisian landmarks like the Eiffel Tower and Notre Dame were opened to the public on Saturday after an extensive $1.

Three sites will be able to welcome over 1,000 swimmers daily until August 31, local officials said, to the delight of the Parisians and visitors who were among the first to take the plunge.

The French capital's iconic waterway has been largely closed to swimmers since 1923 due to pollution and risks from river navigation.