Upstream of the old semaphore, part of the breakwaters that extended as far as the old Blancpignon slaughterhouses remain. Before the construction of the north pier, they allowed the waves arriving at the mouth of the river to be spread out.
<a href="//commons.wikimedia.org/wiki/User:Dvillafruela" class="mw-redirect" title="User:Dvillafruela">Daniel Villafruela</a>.
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>.