And while we're at it:
The approx. locations of the three tertiary French tripoints of Paris:
75-92-93:
http://tinyurl.com/2olm4
75-93-94:
http://tinyurl.com/37k83
75-92-94:
http://tinyurl.com/yupxh
First one is between Paris, Clichy, and Saint-Ouen
Second one is between Paris, Saint Mandé, and Montreuil
Third one is between Paris, Montrouge, and Gentilly
Departement numbers:
75: Ville de Paris
92: Hauts-de-Seine
93: Seine-Saint-Denis
94: Val-de-Marne
Peter S.