La Mercè 2017 Monday, 02 October 2017 Over a million people came out onto the street to enjoy the activities scheduled for the Mercè, Barcelona’s Festa Major. More information. Share Add new comment All comments Send us a comment and share with us your experience regarding this event . You can also send us your personalized query or drop us your suggestions. * The content of this field is kept private and will not be shown. Your name Subject Comment * CAPTCHAThis question is for testing whether or not you are a human visitor and to prevent automated spam submissions.