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.

Just one day after opening the Seine River to swimming for the first time in more than a century, French officials shut down the river due to concerns about pollution following heavy rainfall. Swimming in the Seine has largely been illegal since 1923 due to pollution and other safety risks.

Authorities have reopened the Seine river in Paris to public swimming for the first time after a century-long ban. Here's what you need to know.