This underground reservoir - fed by a 700 metre long tunnel - is designed to hold ... B in case it’s not possible to swim in the Seine.” The river is also set to play a major role in the ...

Beneath Paris lies a sewer system, a network of tunnels covering ... officer says the river isn't without risks, but the water quality is improving every day and the Seine is gradually becoming ...

Athletes dive into the Seine River from the Alexander III Bridge on the start of the first leg of the women's triathlon test event for the Paris Olympics this past summer. (Michel Euler/AP ...