San Isidro + International Museum Day: Free city events (May 15–22)

Madrid’s run of free mid-May events stretches beyond the May 15 San Isidro holiday and into International Museum Day programming that continues through Thursday, May 22. City and regional listings show concerts, museum activities, street events and a historic-vehicle parade spread across central Madrid and nearby venues. The programming is split between San Isidro festivities, which officially ran through May 17, and museum events tied to May 18 and related activities later in the week. ### What is still happening in Madrid this week? May 22 is the key remaining date in the citywide listings. Madrid’s tourism agenda says International Museum Day activities are centered on May 18, with related events running “during the whole week,” and specifically lists Fiesta Radio 3 at the Museo Reina Sofía on May 22. The Ayuntamiento de Madrid said its municipal museums were offering a special free program around the Day and Night of the Museums, including concerts, dance, family workshops, historical reenactments, craft demonstrations and extraordinary night openings. (diario.madrid.es) Those activities were spread across sites including the Museo de San Isidro, Museo de Historia de Madrid, Museo de Arte Contemporáneo, Imprenta Municipal, Ermita de San Antonio de la Florida, Castillo de la Alameda and the Planetarium. (esmadrid.com) ### Which parts belonged to San Isidro, and which belonged to Museum Day? San Isidro 2026 in Madrid ran from May 7 to May 17, according to the city’s official festival program and music announcement. The city said the main music stages were Plaza Mayor, the Pradera de San Isidro, the Jardines de las Vistillas and Matadero Madrid, with close to 50 groups and solo artists on the bill. (diario.madrid.es) The San Isidro lineup included artists and groups such as Las Ketchup, Los Chunguitos and Fangoria at the Pradera, while other concerts and verbenas were scheduled across the city’s main festival sites. A separate city weekend guide said San Isidro events were still driving Madrid’s cultural calendar through May 17. International Museum Day, by contrast, is observed on May 18. (diario.madrid.es) Madrid’s tourism listing says museums across the city joined the celebration under the 2026 theme “Museums uniting a divided world,” with free activities on May 18 and related programming before and after that date. ### What was the historic car parade? May 15 was the announced date for the Gran Desfile de Vehículos Históricos in Madrid, according to the Federación Española de Vehículos Antiguos. (russpain.com) FEVA said the event would bring together more than 100 vehicles built before 1969, coinciding with San Isidro celebrations. The federation said participants were due to gather at 9:30 a.m. near the Escuela Técnica Superior de Ingenieros Industriales of the Universidad Politécnica de Madrid, followed by a static display from 10:30 a.m. to noon. (esmadrid.com) The parade itself was scheduled from noon to 1:30 p.m. on a route including the ETSII area, Plaza de San Juan de la Cruz and Plaza de Cibeles. (feva.es) FEVA said the event was organized with ASEPA, the Colegio Oficial de Ingenieros Industriales de Madrid, ETSII-UPM and INSIA. Russpain’s roundup also described the parade as free to attend. ### Which museums and venues were highlighted? The Comunidad de Madrid said its free museum program from May 16 to May 18 included the Casa Museo Lope de Vega, Museo Picasso-Colección Eugenio Arias, Centro de Interpretación de Nuevo Baztán, Museo Centro de Arte Dos de Mayo, Museo Arqueológico y Paleontológico de la Comunidad de Madrid and Museo Casa Natal de Cervantes. (feva.es) The regional government said the Casa Museo Lope de Vega would open exceptionally on Monday, May 18, and would also host the theatrical route “Letras y espadas” through the Barrio de las Letras on Saturday, May 16. Russpain also pointed to CA2M in Móstoles and family workshops at the Picasso Museum and Nuevo Baztán Interpretation Center, while noting that some activities required advance registration because of limited capacity. (comunidad.madrid) ### Where should people check the schedule now? Madrid’s official tourism agenda says to consult programming details by venue, because activities are distributed across multiple spaces and dates. The city’s museum listing names May 22 for Fiesta Radio 3 at the Museo Reina Sofía, and the municipal San Isidro and museum pages continue to serve as the main schedule references for what remains this week. (comunidad.madrid) Thursday, May 22, is the clearest next date on the calendar. That day’s Fiesta Radio 3 at the Museo Reina Sofía is listed by Madrid’s tourism site as part of the extended International Museum Day program. (esmadrid.com)