Valencian architecture practice Fran Silvestre Arquitectos was commissioned to design this house located on the hillside above the castle of Ayora, a municipality in the interior of the province of Valencia, Spain.

The city is the capital of the Ayora-Cofrentes Valley region and is known for its rich history and valuable natural and cultural heritage, among which its castle stands out. The defensive structure, built in the mid-13th century on an ancient Moorish construction, stands 552 m above sea level in the center of town, becoming a landmark for the entire city.

The building designed by Fran Silvestre Arquitectos, located in a landscape of singular beauty, seeks to integrate into its surroundings, respecting its urban strategies of adaptation to the environment and its materials. It distances itself from historicist mimesis, offering a contemporary formal and functional response.

A piece built with the same whitewash, with a resounding exterior tectonics. Inside, everything is organized around the void generated by the communication core, arranged parallel to the mountain cut, without touching it. The garage and cellar are located on the ground floor; above this, a two-story volume with four rooms is arranged. Two of these, the bedrooms, on the intermediate level, open onto the private street; the other two, on the upper level, overlook the Ayora Valley above the homes opposite. The day areas are located on the mountain, overlooking the garden illuminated by the southern light reflected on the castle's rusty slope.

House on a castle’s hillside by Fran Silvestre Arquitectos. Photograph by Fernando Alda

House on a castle’s hillside by Fran Silvestre Arquitectos. Photograph by Fernando Alda.

Project description by Fran Silvestre Arquitectos

The building is located in a landscape of unique beauty, the result of natural and evident growth. The mountain, topped by a castle, is covered by a blanket housing through a system of aggregation by simple juxtaposition of pieces, generating fragmented target tissue that adapts to the topography.

The project proposes to integrate into the environment, respecting their strategies of adaptation to the environment and materials away from the mimesis that would lead to misleading historicism, and showing the time constructively to meet the requirements of the "new people." In this way, the house is conceived as a piece placed on the ground, joining in the gap. A piece built on the same white lime, the same primacy of the massif on the opening, which takes the edge of the site to have its holes and is integrated into the fragmentation of the environment.

House on a castle’s hillside by Fran Silvestre Arquitectos. Photograph by Fernando Alda.

House on a castle’s hillside by Fran Silvestre Arquitectos. Photograph by Fernando Alda.

The indoor space is divided by the void that is the core of communication, cut parallel disposition of the mountain without touching it. On the ground floor are the garage and cellar, on a volume it has two floors with four rooms. Two of them, the rooms at the intermediate level, are open to the private street, and the other two on the upper level overlook the houses opposite, the Valley of Ayora. One of them, the study is opened in turn to the central double height, incorporating it into their space. Across the gap, and on the mountain, are the areas facing the garden, day illuminated by light reflected on the south slope of the castle oxidized.

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Architects
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Fran Silvestre Arquitectos. Architects.- Fran Silvestre, María José Sáez.

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Project team
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Ángel Ruiz, Jose V. Miguel, Arturo Silvestre.

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Collaborators
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Interior design.- Alfaro Hofmann.
Structure.- Estructuras Singulares UPV | Universitat Politècnica de València.
Quantity surveyor.- Pedro V. López.

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Builder
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Cooperativa Montemayor.

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Area
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Plot area.- 477.06 m².
GFA.- 230.00 m².

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Dates
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Completion.- 2025.

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Venue / Location
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Ayora, Valencia, Spain.

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Manufacturers
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BUILDING SERVICES. Sanitary ware.- Toilet and bidet / Catalano C52 Series. Wash-basins  / Sanico Supercity. Taps.- Bathrooms / Hansgrohe Talis S2. Kitchen / Grohe Minta. Lighting.- Special-sized fluorescent linear luminaire (Studio2). Light Fittings: Jung LS 990 Series.
FINISHES. Flooring.- Interiors / Capri stone, free-cut (large format). Exteriors / Capri stone, free-cut (large format). Cladding.- Walls and ceilings / Gypsum plaster. Bathrooms / Capri stone cladding. Exteriors / Thermal insulation + white mortar (Sate Vipal). Paints.- RAL 9010 matte plastic paint / Valentine.
METALWORK AND LOCKSMITHING. Interior carpentry.- Passage doors and wardrobes / RAL 9010 white lacquered MDF (Carpintería Sergio). Carp. Exterior: Open-pore lacquered wood (Carpintería Sergio). Glazing: Climalit + Stadip safety glass.
FITTINGS: Kitchen: MDF board lacquered in white RAL 9010 (Carpintería Pedro Segura Landete).

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Photography
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Fran Silvestre Arquitectos is an architecture studio based in Valencia, founded in 2005 by architect Fran Silvestre. The studio operates from the former workshop of sculptor Andreu Alfaro, a 7,000 m² space where a multidisciplinary team of more than 50 professionals develops projects. Its work encompasses residential, cultural, corporate, and public buildings in different countries, characterized by formal purity, modulation, serialization, and the innovative use of materials and technologies.

Fran Silvestre was born on July 5, 1976, and graduated in Architecture from the School of Architecture of Valencia in 2001, obtaining his degree with honours. One year later, he completed his qualification as an urbanist at the Technische Universiteit Eindhoven (TU/e), also with the highest distinction. He holds a PhD in Architecture from the Polytechnic University of Valencia, where he earned a Doctorate in Design with the distinction Cum Laude.

His professional education was further enriched by a fellowship to work in the studio of Portuguese architect Álvaro Siza, recipient of the Pritzker Prize, with whom he has maintained professional collaborations since then. In parallel, he has pursued an intense academic career: he has been a professor in the Department of Architectural Design at the Polytechnic University of Valencia since 2006 and at the European University since 2009. In 2011, he was appointed Deputy Director of the School of Architecture of Valencia, and in 2018, he was awarded the Victor L. Regnier Chair at Kansas State University (KSU), in the United States. He currently also directs the March Postgraduate School in Architecture and Design. He is the great-grandson of Valentín Silvestre Fombuena, who, according to the records of the Spanish Patent and Trademark Office, was the most prolific inventor in the second half of the nineteenth century.

Throughout his career, he has received numerous awards, including the Fundación Caja de Arquitectos Prize (2001), the COACV Architects’ Association Award (2010), and the Red Dot Design Award (2013). In 2012, he was appointed Ambassador of Spanish Architecture in the United States by the Ministry of Culture and Sport. He has also received the NYCxDESIGN Award (2016), the German Design Award on several occasions (2016, 2020, 2021, and 2024), the IF Design Award (2021), and the Bronze Delta Award at the ADI Awards (2024), as well as the first prize at the XIII Spanish Biennial of Architecture and Urbanism (BEAU) in the design category. In 2022, he was awarded the First Prize with a Gold Medal in the Architecture category by the International Federation of Architects and Designers.

His work has been exhibited at international museums and institutions such as the Museum of Modern Art (MoMA) in New York and the Serralves Museum in Porto, and he has been invited to lecture at universities and institutions including KSU, the American Institute of Architects (AIA) in New York, and Virginia Tech. His projects have been widely published in leading architectural journals such as Architectural Record, GA Houses, On-Diseño, and Interni, as well as by major publishers including Phaidon, Taschen, Thames & Hudson, and GG. Several monographs have documented the studio’s work, including those published by TC Cuadernos, A.Mag, and Arianuova, with particular note of the monograph published by Rizzoli (New York), featuring texts by critic Philip Jodidio.

Projects by Fran Silvestre Arquitectos are located across countries, including China, the United States, Brazil, Thailand, Egypt, Croatia, Italy, Australia, and Spain. Throughout its trajectory, the studio has worked on projects of both small and large scale. Notable works include the Atrium House (2009), the House on the Slope of a Castle (2010), the Cliff House (Alicante), the Balint House (Valencia), the Hollywood Hills House (Los Angeles), the Sabater House (Orihuela), the Zibo Master Plan (China), the Boutique Hotel in Vis (Croatia), and the Wind Tower (Valencia).

The studio’s architecture is deeply influenced by the work of Álvaro Siza and Andreu Alfaro. According to critic David Cohn, Fran Silvestre’s work is not driven by a search for a lost authenticity nor by the pursuit of the perfect geometry of form, but rather by the creation of environments that, through abstraction and precise architectural intention, elevate everyday life toward a more intense and conscious engagement with the surrounding environment.

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Published on: August 5, 2025
Cite:
metalocus, SARA GENT
"Abstraction and tradition. House on a castle’s hillside by Fran Silvestre" METALOCUS. Accessed
<https://www.metalocus.es/en/news/abstraction-and-tradition-house-castles-hillside-fran-silvestre> ISSN 1139-6415
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