3 May 2021 – EN

Dissipating office building

Madrid, 2012-2020

The building is located in Paseo de la Castellana, an urban promenade in which there are a collection of architectural masterpieces since 19th Century until nowadays, condition which makes necessary to consider how should this enterprise be materialized in the 21st Century. This reflection is twofold, both technical and aesthetical, which converge in a building which integrates and reinforces them.

If there is contemporary architectural paradigm, it necessarily integrates environment, health and wellbeing. The search for an environmental-aware architecture cannot be disconnected from the wellbeing and enjoyment of its inhabitants. The understanding that an office building is a dissipating typology, sparked the search on the one hand of underground heat sinks, and on the other hand of solar protection, questions which converge in the construction of interior spaces which are naturally-ventilated and are tempered by radiant surfaces, attaining a set of healthy and intense workspaces.

The building poses an alternative to the typical air-conditioned sealed
envelope office building. First, the curtain wall gives way to a faceted
envelope which, due to its morphology, reduces solar impingement. Second,
the air-conditioning gives way to a radiant system embedded in the concrete
slabs which tempers the interior through the elimination of suspended
ceilings. As a result structure and climate control are integrated through a
convergent strategy which overlays tectonics and thermodynamics.

The aesthetic dimension addresses the phenomenological vein of architecture, understanding that in the work of artista such as Olafur Eliasson or Arnaud Lapierre perception unfolds a collective and shared aesthetic experience which needs to form part of architecture. As a result the building is wrapped in a solar envelope which, as a kaleidoscope, intensifies the experience of Madrid’s skies, presenting a building which in its multiplicity of changing reflections becomes a shared public experience.

The interest of the project resides in how these two dimensions, the technical and the aesthetical, converge in a building which combines the most essential needs of architecture —environmental or corporeal— as an opportunity to explore this new aesthetic collective dimensions.


Location: Paseo Castellana 94, Madrid

Date: 2012-2020

Client: Regato SL

Area: 7.100 m/2

Quantity Surveyor: ARETÉ arquitectos técnicos slp

Budget: 10.100.000€

Project architects: TAAs (Javier García-Germán) + BETA.0 (Borja Peña)

Competition team: Javier García-Germán, Alia García-Germán, Borja Peña, Lucía de Val, Nacho Espigares, María González, Regina Valle, XMADE

Project team: Alia García-Germán, Germán Andres, Sumac Cáceres, Mario Nistal, Felipe Reyno, Pablo Rodríguez, Alba Sospedra, Pedro Pablo Valdazo

Site supervision: Alia García-Germán, Sumac Cáceres, Ernesto Sierra

Consultants: BOMA-IMPASA, Úrculo Ingenieros, Sacyr industrial

Contractor: OHL

Photography: Miguel de Guzmán





Iñaki Ábalos: “Si pienso en la generación que ha tenido su primera oportunidad de intervenir en la ciudad de Madrid de forma significativa no dudo en señalar a Javier García-Germán (TAAs, Totem Arquitectos Asociados, Madrid)”

Ver artículo



“Castellana que estás en los cielos”

El Cultural 11-12-2020. Pgs 46-47


Castellana 94.
“Sostenibilidad y presencia.”
LLátzer Moix. La vanguardia, 25 enero 2021