Castle of La Alameda: A Medieval Fortress and Renaissance Palace in Madrid
Site at a Glance
- Rating
- 4.3
- Popularity
- Low
- Country
- Spain
- Primary era
- Medieval
- External website
- Open
- Eras represented
- Bronze Age, Classical, Medieval, Early Modern
- Civilizations
- Crown of Castile, Roman, Spanish
- Site type
- Military
- Remains
- Castle
On this page15 sections
History
The Castle of La Alameda is a fifteenth-century fortress in Spain, located in Madrid’s Alameda de Osuna neighborhood. Built during the late-medieval period under Castilian noble lordship, it stood beside La Alameda, a village formed during the thirteenth-century repopulation of the area. The castle later became a Renaissance palace, served as both a residence and a prison, and is now one of four surviving medieval fortifications within the municipality of Madrid.
Earlier settlement and medieval foundation
Archaeological evidence places a settlement beneath the castle around 2000 BC. Later occupation continued through the Roman and medieval periods. The settlement occupied a defensible position above the Rejas stream and controlled the route toward the Ebro valley, helping explain the location’s long history of habitation.
In the late fourteenth century, the village of La Alameda was granted as a lordship to the Mendoza family, whose lordship also included Barajas. The castle was built between 1431 and 1476, probably on the initiative of Diego Hurtado de Mendoza, although that attribution remains uncertain. A record from 1476 describes it as a refuge for supporters of Joanna la Beltraneja after their defeat at the Battle of Toro, an episode in the War of the Castilian Succession between rival factions for the Castilian crown.
King John II of Castile later granted the castle as the dowry of Inés de Ayala y Ruiz Sanz Zapata. Through this transfer, it passed to the Zapata family, a prominent lineage connected with Madrid’s late-medieval urban patriciate.
Transformation into a Renaissance palace
In 1575, Francisco Zapata y Cisneros became the first Count of Barajas and lord of La Alameda. A steward to Philip II and president of the Council of Castile, the monarchy’s principal Castilian governing and judicial institution, he commissioned an expansion that reshaped the fortress as a Renaissance palace with an elaborate garden. The work added a keep, new wings along the eastern and southern sides, and larger openings that brought more light into the building.
After Francisco Zapata moved to Madrid because of his public offices, further reforms were commissioned from the Toledo architect Nicolás de Vergara in 1586. The original moat was converted into a garden during this period, changing the character of the fortified residence.
Residence, imprisonment, and decline
The remodeled building accommodated prominent figures and also held notable prisoners. Fernando Álvarez de Toledo y Pimentel, Duke of Alba, lived there in 1580 after returning from exile at Uceda. Margaret of Austria visited the castle in 1599 while traveling to Madrid after her marriage to Philip III. Between 1622 and 1624, the third Duke of Osuna died there after a short captivity. After his death, his wife, the Countess of Benavente, purchased adjoining land that later became the Alameda de Osuna estate.
A fire destroyed the castle late in the seventeenth century. Following its abandonment, residents of Alameda, by then a town, were permitted during the eighteenth century to remove stone and other building materials for use on their properties. In 1772, a resident denounced the ruins as a refuge for criminals. In 1777, nuns from the convent of Santo Domingo el Real received permission to take stones from the ruins to rebuild collapsed vineyard walls. From 1787, material from the castle precinct was also used in constructing El Capricho, the estate of Duchess María Josefa Pimentel y Téllez-Girón.
The deterioration continued during the nineteenth century. The ruins were plundered, and stone from the castle was used to construct the Fernán Núñez family pantheon by the family that had inherited the title of Count of Barajas. In 1856, the duchess proposed converting the castle into a country house. Unsigned drawings for that project survive and may have been made by a Belgian architect.
War damage and conservation
The Spanish Civil War caused further damage during the first half of the twentieth century. A machine-gun position was installed beside the castle as part of the defensive system of the Republican high command based at El Capricho.
Municipal architect Pedro Herrero Pinto carried out structural-consolidation work in 1988 and 1989. Excavations in the 1980s identified earlier pre-Roman and late Roman buildings, while work at the castle and its surroundings from 1996 revealed occupation extending from the Bronze Age through the Roman period. The City of Madrid later acquired the castle through an urban-planning transfer. It is a protected Asset of Cultural Interest, Spain’s principal category of protected cultural heritage, and is administered by the Department of Museums as part of the Museum of Origins. Partial restoration and the castle museum have supported its preservation and interpretation since 2010.
Remains
The Castle of La Alameda survives as a small rectangular fortress with rounded corners and an interior area of approximately 200 square metres. Its principal building material is flint set with lime. The surviving fabric combines the compact defensive form of the medieval castle with alterations made when it was converted into a Renaissance palace. The structure stands above archaeological remains from the Bronze Age, pre-Roman, Roman, and medieval periods, and is preserved in a partially restored, semi-ruinous condition.
Fortress structure
Walls and towers
The medieval enclosure has rounded corners and retains a square tower at the northwestern corner and a cylindrical tower at the opposite end. These surviving towers belong to the fortress form that preceded the sixteenth-century residential remodeling. The building was constructed mainly from flint and lime, materials that remain visible in its surviving fabric.
Moat and garden
A moat, a defensive ditch surrounding or partly surrounding a fortification, originally accompanied the castle. During the Renaissance remodeling, it was transformed into a garden as the site changed from a primarily defensive stronghold into a palace residence. The castle was probably originally set within the holm-oak woodland characteristic of the surrounding area.
Renaissance palace additions
Keep and lateral wings
The 1575 rebuilding added a keep, the principal fortified tower of a castle, together with lateral wings along the eastern and southern sides. These additions enlarged the residential complex and altered the relationship between the original fortress and its surrounding grounds.
Enlarged openings
The palace remodeling also introduced larger openings designed to admit more light. Their inclusion formed part of the broader transformation from a compact medieval fortress into a Renaissance residence. The surviving structure therefore preserves evidence of both defensive construction and later aristocratic domestic use.
Archaeological layers
Bronze Age and pre-Roman remains
Archaeological remains beneath and around the castle indicate occupation beginning around 2000 BC and continuing through the pre-Roman period. These earlier layers establish that the castle was built over a long-inhabited settlement rather than on an unused site.
Roman and medieval remains
Excavations also identified late Roman buildings and medieval occupation beneath the castle and in its surroundings. Together with the surviving fortress, these remains preserve a sequence of settlement from the Bronze Age through the Roman and medieval periods.




