The AUIC (Classic Computer Users Association), are in the final stages of organizing the RetroMadrid festival, scheduled on May 4th, 5th and 6th. This time the place will be at the Creative Center of Contemporary Matadero, Madrid, a bigger place compared to other years. Over three days, there will be shared many activities related to the world of retro computing.
You can find a list of booths and the scheduled activities on the AUIC
website.