You’d better be aware that some non-official hashtags could appear spontaneously during the #MuseumWeek! A french researcher called Antoine Courtin claimed that there have been 83 different battles last year!
— Courtin Antoine (@seeksanusername) 2 avril 2015
Here below are some very nice examples, be creative…and vigilant!
Cover image by @mcqorg
Article by @benben71