New public space on the coverage of the Ronda de Dalt in the district of Horta-Guinardó, Barcelona

A productive wooden pergola transforms a public space into a biodiverse climatic refuge.

Cobertura verda de la Ronda de Dalt a Barcelona
Cobertura verda de la Ronda de Dalt a Barcelona

Green coverage of the Ronda de Dalt in Barcelona

A design aligned with the climatic emergency that we are living that achieves a new public space in the Ronda de Dalt. A new connection between the neighborhoods of Teixonera and Sant Genís dels Agudells on the slope of Parc de Collserola using natural materials, cultivating life and producing renewable energy.


Batlleiroig Arquitectura. Enric Batlle Durany, Joan Roig i Duran, Iván Sánchez Fabra – Architect/ Joan Batlle Blay – Architect and landscape architect/ Lola Simón, Maria Blanco – Engineer


Marina Santos Loshuertos, Mercè Lorente i Gras – Architect / Diana Calicó Soler, Elisabeth Torregrosa Avilés – Building engineer / Dolors Feu – Agricultural engineer and landscape architect / Yago Cavaller Galí – Agricultural engineer and environmentalist


BIS Structures – Structural engineering


BIMSA – Barcelona d’Infraestructures Municipals


Construction company

VIAS, Voracys

Project status

In progress

Start date

© Jordi Surroca


Les Rondes, the emblematic “ring roads” was designed in the sixties. Many political, technical, and economic disputes prevented it from being inaugurated until after 30 years. The 1992 Barcelona Olympics were the definitive push for some works that led to an unprecedented urban transformation in the city.

30 years later it has been possible to recover social life in front of the Vall d’Hebron Market, between the neighborhoods of La Teixonera and Sant Genís dels Agudells, where it had apparently almost completely disappeared. A new paradigm of mobility has left cars behind as the main protagonists. The infrastructure has been recovered as an active part of the free space system of our city, giving importance to walking, the interaction between neighbors, and the pacification of our streets.

The pergolas help to overcome the barrier that the Ronda de Dalt represents between the neighborhoods of Sant Genís and La Vall d’Hebron i la Teixonera. / © Jordi Surroca
This project is the seed of the transformation of the Ronda de Dalt to enhance social connectivity, amplify ecological connectors and generate productive spaces for the present Barcelona. Joan Batlle BlayLandscape architect, Architect / R+D Director and Landscape Vice Director / Partner


It is a square that is configured with a large productive pergola, becoming one of the largests photovoltaic pergolas in the city, a reflection of the commitment of the city of Barcelona and the conviction of batlleiroig to reverse the current situation and achieve energy self-sufficiency of public spaces.

A public space for energy production that, beyond the shadow that it produces, seeks to expand its benefits to turn the square into a bioclimatic space, surpassing the large concrete slab of the subsoil, allowing to maximize the vegetal presence on the entire surface.

In addition, special attention has been paid to the design of the green area to ensure that it complies with the requirements of gender and inclusive urban planning, avoiding the creation of hidden spaces, dead spots, or dark spaces, creating a safe public space for everyone.

© Jordi Surroca
Little by little, the vegetation takes over the pergolas. / © Jordi Surroca


A linear garden of autochthonous species will allow us to re-naturalize this part of the city gained from cars, making it healthier. Accompanying the vegetation, some stone steps from a nearby quarry create different meeting spaces, where the citizen can escape the noise and the intrinsic speed of the city, to really feel in a space of pause and connection with nature.

The large productive pergola, together with two more along the promenade, allows maximizing the presence of the vegetation that will gradually colonize them, shading the square and the promenade and making this new social axis a public space quality.

Thanks to the shading they generate, help to control the surface temperature of the public space counteracting that of the asphalt areas and making this space a new green lung for the city.

The vegetation surrounds the rest areas in the shade of the pergolas. / © Jordi Surroca


For the materialization of the new civic axis, aware of the weight that architecture has in the climate emergency, we have opted for materials that allow us to carry out a sustainable and healthy development of our cities. Proximity, recyclable materials are used with minimal CO₂ consumption, defining the closed cycle of resources.

The use of natural materials extends to the entire urbanization through two types of stone both from the Catalan territory. Surrounding the vegetation, winding natural stone steps create different meeting spaces. The steps are made up of stone blocks that preserve the striations typical of the quarry extraction, thus reducing the manufacturing processes and, therefore, the energy resources that are invested. The stone used for the steps is sandstone from Les Borges Blanques, while the pavement in the living areas is the calcareous stone from Ulldecona due to its great hardness.

For the materialization of the pergolas, we have opted for wood, a natural, sustainable and renewable material that has excellent technical qualities for use in practically any type of construction. The vertical cut ends of the beams and the placement of an upper finishing piece, protect the points most susceptible to water ingress, preserving the material from deterioration. In addition, the stainless steel joints ensure the maximum durability of the structure.

© Jordi Surroca
© Jordi Surroca
© Jordi Surroca


These structures have also been an opportunity to turn the landscape of the city into a productive landscape, placing photovoltaic panels on the largest pergola, which with an installed power of 43 KW, will provide energy to one of the closest facilities.

The folds that characterize the wooden structure generate south-facing planes on which the different groupings of plates have been placed. A total of 580 m² have been covered with 218 transparent modules, which allow the view of the sky from the square to be unobstructed while casting very characteristic shadows on it.



TV3 interviews Batlleiroig about the new models of wood construction.

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TV3 interviews Batlleiroig about the new models of wood construction.

We talked about in the Green coverage of the Ronda de Dalt.

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