The Feast of the Virgin of Almudena is observed in Madrid every November 9, celebrating the city's patron saint. This significant public holiday commemorates the Virgin of Almudena, a medieval icon of the Virgin Mary, believed to have been hidden by local residents in the walls of Madrid during the Muslim conquest in 712. The statue was miraculously revealed during the reconquest of Madrid by King Alfonso VI in 1085. Celebrations begin with a mass at Almudena Cathedral, which is the archiepiscopal see of the Roman Catholic Archdiocese of Madrid, followed by a procession to Plaza Mayor. The festivities include concerts, theater performances, and various cultural events throughout the day, highlighting the importance of this occasion for the residents of Madrid. Almudena Cathedral, known for its Neo-Baroque and Neo-Gothic architecture, serves as a central location for the celebrations.