--- In BoundaryPoint@yahoogroups.com, "Jesper Nielsen" <jesniel@i...>
wrote:
> Day 4: We decided to stay in Paris. Hotel near tripoint of the
three Paris arrondisements 9, 10 and 18. I only figured that out
late, but here is a photo : http://www.r-
flux.com/paris.visit/paris.snap.07.html. Tripoint is possibly at the
trafic island beacon, but I don't know how well the boundaries are
defined.
Me neither, I suspect not very well. I have seen other maps that draw
the arrondissement borders around the house blocks, thus leaving the
streets that are on the border outside of any arrondissement. What
the truth is here I don't know.
> Talking about Paris arrondisements, 8, 9 17 and 18 appears to be a
quadro: http://marchand.free.fr/download/paris.gif. Anybody can
confirm this?
>
Difficult to say. See below.
Tripoints:
1-2-3: Intersection rue Étienne Marcel / boulevard de Sébastopol
1-2-9: Intersection rue des Capucines / boulevard de la Madeleine /
boulevard des Capucines
1-3-4: Intersection rue Rambuteau / boulevard de Sébastopol
1-6-7: On bridge, pont du Carrousel
1-7-8: In Seine, south of place de la Concorde
1-8-9: Intersection rue Vignon / boulevard de la Madeleine
2-3-10: Intersection boulevard de Sébastopol / boulevard Saint-
Denis / boulevard de Strasbourg
2-9-10: Intersection rue du Faubourg-Poissonnière / rue
Poissonnière / boulevard Poissonnière / boulevard de Bonne-Nouvelle
3-4-11: Intersection rue du Pas-de-la-Mule / boulevard Beaumarchais
3-10-11: Place de la République (at the monument? I don't know)
4-5-12: In Seine, where channel to Arsenal marina branches off
4-11-12: Place de la Bastille (probably at the colonne de Juillet)
5-6-14: Intersection avenue de l'Observatoire / boulevard du
Montparnasse / boulevard de Port-Royal
5-12-13: On bridge, pont d'Austerlitz
5-13-14: Intersection rue de la Santé / boulevard de Port-Royal
6-7-15: Intersection rue de Sèvres / boulevard du Montparnasse /
boulevard des Invalides
6-14-15: Intersection rue du Départ / boulevard du Montparnasse
(southern edge of place du 18 Juin 1940)
7-8-16: On bridge, pont de l'Alma
7-15-16: In Seine, due west of Eiffel tower
8-16-17: place Charles de Gaulle (Arc de Triomphe)
9-10-18: Intersection boulevard de Magenta (axis of rue du Faubourg-
Poissonnière) / boulevard de Rochechouart / boulevard de la Chapelle
10-18-19: Intersection rue d'Aubervilliers / boulevard de la
Chapelle / boulevard de la Villette
11-12-20: Intersection boulevard de Charonne / avenue du Trône /
cours de Vincennes
Quadripoints:
1-4-5-6: On bridge, pont Saint-Michel
8-9-17-18: Place de Clichy (this may not be a quadripoint, because
the axes of the streets forming the borders 8-9 (rue d'Amsterdam) and
17-18 (avenue de Clichy) are not exactly aligned. This is because the
avenue de Clichy is in fact the old extra-muros prolongation of the
rue de Clichy, not of the rue d'Amsterdam. So maybe there are two
tripoints: 8-9-17 and 9-17-18).
10-11-19-20: Intersection rue du Faubourg du Temple / rue de
Belleville / boulevard de la Villette / boulevard de Belleville
About time for me to visit Paris again...
Peter S.