Well, three of them anyway (in all, there
are 37, including 3 for pedestrians and 2 for trains).
Visible through the ornate railing of the Pont
Notre Dame (1853) is the Pont au Change (1860),
and behind that is Paris's oldest bridge, the Pont Neuf,
which dates all the way back to 1606.
[Linking back to Mandarin Orange Monday
and to Travel Photo Mondays.]