About this place
The Palace of the Counts of Buendía in Dueñas is one of the most historically significant buildings in this small town in the province of Palencia, in the Spanish region of Castile and León. Although the structure stands today largely in ruins, for centuries it served as the seat of one of Castile's most prominent noble families and hosted events that shaped the history of the Spanish crown.
Who built the palace, and when?
Construction began around 1440 under the Acuña family, who had been granted lordship over Dueñas the previous year, in 1439. The new residence rose partly on the site of earlier buildings, including a palace once linked to Queen María de Molina. Throughout the 15th and 16th centuries, the building functioned as the main seat of the Counts of Buendía, a title held by members of the Acuña line.
What historical events took place at the palace?
The palace repeatedly hosted key figures of the Castilian monarchy. Soon after it was built, in 1440, it was the site of the first meeting between the heir to the Castilian throne — later King Henry IV — and his betrothed, Blanche of Navarre, following marriage negotiations in which Pedro Vázquez de Acuña, the first Count of Buendía, had taken part.
The palace's importance grew further under the Catholic Monarchs. Prince Ferdinand stayed in Dueñas in 1469, and the following year Isabella of Castile and Ferdinand of Aragon themselves moved into the Acuña palace, where their first daughter, Infanta Isabella, was born in 1470. In 1506, Ferdinand the Catholic married for a second time here, to Germaine of Foix. Later monarchs Charles I and Philip II are also recorded among the palace's visitors.
What does the palace look like today?
The building occupies an entire city block. One of its façades runs the full length of the former market square — today's Plaza de España — and descends toward the Barbacana promenade. Its main entrance opened onto the street and square of Las Tercias, now Isabel la Católica, through a stone portal topped by a carpanel arch leading into the arms courtyard. The palace was built in stone, with upper sections in masonry and adobe over a timber frame, rising three storeys around the courtyard.
The historic core of Dueñas, where the palace stands, was declared a Historic-Artistic Site in 1967. The palace itself, however, has long stood in an advanced state of disrepair.
What is happening to the palace now?
In 2019, the municipality of Dueñas purchased the palace with the aim of putting the site toward public and community use. In April 2026, consolidation works began as the first phase of a project to convert the building into an educational institute.
Frequently Asked Questions
Can the palace be visited? The site is currently undergoing restoration work and much of the original structure is in ruins, so visitors should check with the Dueñas town authorities for current access information before planning a visit.
Why is the palace named after "Buendía"? The name comes from the title Counts of Buendía, held by the Acuña family, who took control of Dueñas in 1439 and built their main residence here.
What event links the palace to the Catholic Monarchs? In 1470, the palace was the birthplace of Infanta Isabella, the first daughter of Isabella of Castile and Ferdinand of Aragon; in 1506, Ferdinand the Catholic also married Germaine of Foix there.
What are the future plans for the building? Following the municipality's purchase in 2019 and the start of consolidation works in 2026, the palace is planned to be converted into an educational institute.
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