Sede de Osakidetza, Bilbao, Government office building in Ensanche, Bilbao, Spain

The Sede de Osakidetza is a modern administrative building in Bilbao's Ensanche district featuring a striking glass exterior with geometric folded patterns. The facade spans nine floors and creates a dynamic visual effect that sets it apart from the surrounding urban context.

The building opened in 2008 on the site of the former Ledo-Arteche clinic, bringing together scattered health administration offices under one roof. This consolidation represented a major modernization step for the region's public health infrastructure.

The building's chamfered corner and the tower-like crown on the corner are not free design choices: Bilbao's urban planning rules required repeating the party-wall profile, setting back the attics along a curved line, chamfering the corner and adding a tower. The glass skin folds toward the centre, and its facets mirror the surrounding city.

The building stands at number 39 on Errekalde zumarkalea in the Indautxu neighbourhood, next to the Alhóndiga, the Bizkaia Plaza building and the Chamber of Commerce. It is an administrative office, not a venue open to the public for events, so visits are limited to dealing with the Department of Health and Kontsumobide services housed inside.

The double-glazed glass facade does more than look striking: it naturally controls internal temperatures and reduces reliance on conventional air conditioning systems. This passive design approach keeps the building comfortable year-round while lowering energy demands.