The San Isidro Festival, held at Padre Coloma School on May 15, celebrates Madrid's patron saint with traditional chotis dances performed by couples in typical chulapos costumes. The festival features popular pastries known as rosquillas de san isidro and encourages families to picnic in La Pradera de San Isidro. Artistic depictions, such as Francisco de Goya's work, capture the essence of this significant cultural celebration.