3D printed building using local earth

TOVA is the first 3D printed building in Spain, located at Valldaura Labs in Barcelona. It was built with the Crane WASP printer and 100% local materials and labor, generating zero waste and nearly zero carbon emissions.

This manufacturing system can be used globally to address housing emergencies and was developed by the 3D Printing Architecture (3dPA) program at the Institute for Advanced Architecture of Catalonia (IAAC).

TOVA is Spain's first 3D printed building using raw earth
Photos by © Gregori Civera

Spain’s first 3D printed structure: the TOVA prototype

IAAC has completed the TOVA prototype at Valldaura Labs near Barcelona, Spain. The 3D printed structure was created using the Crane WASP printer and a mixture of earth, aloe, egg whites, and enzymes sourced from within a 50-meter radius of the construction site.

The prototype was designed to demonstrate sustainable building solutions for the design and architecture industries in Spain and generated no waste during the building process. Its foundation was made with a geo-polymer and topped with a wood roof, with a waterproof coating added to withstand extreme weather conditions.

TOVA being 3D printed with Crane WASP using km zero materials

Sustainable building solutions

The building takes into account the climatic conditions of the Mediterranean and has near-zero emissions. It can be used for a variety of applications, from homes to public spaces, and can reduce the environmental impact of construction.

The possible applications of this construction model are endless. In combination with other construction systems, it can accommodate complex and innovative buildings that would reduce the environmental impact that construction currently entails.

Extrusion detail of TOVA the 3D printed house with Crane WASP by IAAC
Photo by Mehdi Harrak
Side view of TOVA in Spain builded by IAAC with raw earth

IAAC and WASP’s collaboration in sustainable 3D printing

IAAC and WASP have been working together for almost 5 years now. Since then, the two companies have not stopped collaborating in the field of additive manufacturing of sustainable architecture.

Students in IAAC’s 3D Printing Architecture program are able to incorporate the institute’s current knowledge and research with WASP technologies through mutual learning experiences.

This collaboration between WASP and universities and research centers around the world demonstrates WASP’s commitment to shaping the future of 3D printing.

closeup of TOVA 3D printed building
Photo by Mehdi Harrak
Panoramic view of TOVA 3D printed sustainable building

Prizes and awards

TOVA is one of the winners of the New European Bauhaus Prizes 2023 in the category ‘Shaping a circular industrial ecosystem and supporting life-cycle thinking’.

The New European Bauhaus is a creative and interdisciplinary initiative run by the European Union that connects the European Green Deal to our living spaces and experiences. The Prizes recognize and reward existing projects which demonstrate that the sustainable solutions promoted by the European Green Deal can also be inclusive and beautiful, bringing high-quality experiences to people’s everyday lives.

“If the European Green Deal has a soul, then it is the New European Bauhaus which has led to an explosion of creativity across our Union.”
 Ursula von der Leyen, President of the European Commission

Architectural 3D printer

TOVA was created using Crane WASP, a collaborative 3D printing system that can print houses using locally sourced materials, also known as Km 0 materials.

Crane WASP


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