From August 23rd to August 26th.
August 23rd from 10:30am to 7pm
August 24th from 3pm to 7pm
August 25th and 26th from 10:30am to 5pm
Prefecture of Police
3 rue de Lutèce (4th arrondissement)
Metro : Cité, Saint-Michel (line 4); Saint-Michel Notre Dame (RER B and C)
Free admission.