Panadería El Horno de San Onofre is a renowned bakery located near El Retiro Park in Madrid. Established in 1873, it is one of the oldest bakeries in the city. This bakery is known for its traditional Spanish pastries and bread, including the famous 'tarta de San Marcos' and 'pan de cristal'. The bakery takes pride in using high-quality ingredients and traditional recipes to create their delicious offerings. Whether you're in the mood for a sweet treat or a savory snack, Panadería El Horno de San Onofre is a must-visit bakery in El Retiro Park.