Over 950 museums in France alone and about the same number in other European countries open their doors on Saturday night 17 May from 7pm till 1am.
It’s the 4th edition of this French initiative. Last year they had over 1.3 million visitors, this year it might get even more, since the French put a lot of effort in this European project to mark their upcoming presidency over the European Union.
More info on the website
