The graticule in Paris has been calculated from "Notre Dame de Paris", considered the heart of the city. There's a stone saying that there, so it must be true.
The area around Paris is full of Parcs, small towns and farms to meet up.
The gps location for 2008-05-20 is in a farm at Moissy-Cramayel.
To get to the location, use http://www.rapt.com (Parisian Transport website)
