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.

Dozens of people arrived early in the morning on Saturday to paddle into the once-polluted water, following a clean-up brought on by last year's Summer Olympics.

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