It was declared Ensemble Historic-Artistic by the Decree 3943/1982 on December 15 1982 (BOE January 26 1983). It is located between the Rivers Eresma and Cambrones and the steep slopes leading to the mountains. It is a scenic enclave with a very high landscape values due to its monumental heritage richness and as well its forest and cattle resources.
In addition to the San Ildefonso Palace, the Riofrío Palace (please see Great Core Heritages) and La Granja Crystal Royal Factory (please see Museums), there are other relevant buildings in El Real Sitio de San Ildefonso:
The Royal Stables (Las Caballerizas Reales)
It is a functional building, from the epoch of Felipe V, dedicated to the horses lodging and dealing. It was built in the mid 18th century by the Count of Montijo initiative. It presents a rectangular ground plan with an interior courtyard, three floors and two towers with remarkable slate capitals. We should emphasize as well above the main entrance the great Royal Coat plaster made by Santiago Bousseau.
The Royal Guards Quarter (Cuartel de Guardias de Corps)
It was built in the reign of Carlos III in the mid 18th century with the aim of lodging the elite military force known as “Guardias de Corps”. Nowadays the building is completely renovated and hosts the Congress and Conventions Center managed by Paradores de Turismo de España.
The Crafts Houses (Casas de Oficios)
It was the building dedicated to lodge the court service staff, and it is located adjoining the Royal Palace by the Infant Arch. It is a rectangular ground plan building with three interior courtyards.
The Canons House (Casa Canónigos)
It was the building dedicated originally to lodge the ecclesiastic personnel servicing the Royal Collegiate Church. It was built in the reign of Felipe V.
The Baüer House (Casa Baüer)
Located in the town center, this mansion started to be built in the third quarter of the 18th century by Diaz Gamones. It was used to lodge the Gentiles Hombres de Cámara. It has been a Royal Patrimony until the mid 19th century when it became a property of D. Ignacio Baüer, the origin of its actual name. It has a rectangular ground plan, and two or three floors, depending on the different heights of the streets of access. It has as well an awesome and remarkable garden. It has been declared Good of Cultural Interest in 1995 (Bien de Interés Cultural-BIC)..
The Infants House (Casa de Infantes)
It was built in the late 18th century at the request of Carlos III to lodge his sons D. Gabriel and D. Antonio and their respective families. The project was directed by Díaz Gamones. It is a Baroque classicist Palace, which presents a rectangular ground plan and three floors. Nowadays it is completely renovated and lodges La Granja Parador de Turismo.
The Queen and Segovia Doors (Puertas de La Reina y de Segovia)
Both were raised in the second half of the 18th century. The first one gives access to the low part of the old town and was granite and grille built with a triumphal arch like design. The second one is the main access to the Royal Site and shows a remarkable forge work made by Silvestre Poderós.
The Valsaín Royal Palace (Palacio Real de Valsaín)
Nowadays it is in ruins; its origins come from the 12th century in the reign of Enrique III, although its definitive development was in the reign of Felipe II. Due to a devastating fire in the late 17th century, only remain the Noon Tower (Torre del Mediodía), part of the West Portico (Pórtico de Poniente), part of the walls of the East Apartment (Cuarto de Levante), the Prince Felipe Apartment (Cuarto del Príncipe Don Felipe) and the New Tower (Torre Nueva) outers. It has been declared Good of Cultural Interest in 1931 (Bien de Interés Cultural-BIC)..