The Fiestas de San Isidro is an annual festival held in Madrid, Spain, celebrating the city's patron saint, San Isidro. This vibrant event typically takes place in May and features a variety of activities, including parades, traditional music, and dance performances. The festival honors the agricultural heritage of the region, with many locals dressing in traditional attire. During the festivities, visitors can enjoy delicious local food, such as cocido madrileño and rosquillas, a type of doughnut. The celebration also includes religious processions, where participants carry the statue of San Isidro through the streets, highlighting the cultural significance of this beloved event.