A finial (from Latin: finins, end) or hip-knob is an element marking the top or end of some object, often formed to be a decorative feature. (wikipedia definition).
Sometimes easy to find but becoming more rare.
A good start. It has everything.
It counts as a finial
Nearly gone but still there
Even smaller finials but nevertheless …
One for the towns notables
The biggest finials on the page, so far.
Nice finials and one topping the roof behind
I think these count
Left side sharing with a small tree
Rue Dufraigne
Finial in Saint-Fargeau