Paris. December 2009. My photo. Walking the Arago route. This is a work of art from Dutch artist Jan Dibbets, to commemorate the astro-politician François Arago (1786-1853), who was Director of the Paris Observatory. More than 135 of these plaques (diameter about 12 cm, with the name "ARAGO") were placed in the Paris pavement in 1994 or 1995, along what was once the zero meridian.