International Museum Day is celebrated around 18 May in museums and cultural venues throughout Barcelona, with special programmes designed for all audiences. The day encourages visitors to wander through galleries and across disciplines, turning the everyday museum visit into a festive experience. More than just a date on the calendar, it offers the chance to explore quieter spaces, where an artwork may surprise unexpectedly. Coinciding with La Nit dels Museus, the celebration continues into the evening, with activities that transform an ordinary night into a special cultural occasion.