Santiago Calatrava ha fatto causa alla città di Bilbao, rea di aver affidato ad Arata Isozaki il progetto per l’ampliamento di un ponte progettato da lui:

…the Spanish architect is suing the city of Bilbao for €3m (£2m) for violation of copyright, for allowing an extension to the bridge to be built by another star architect.
The Japanese architect Arata Isozaki designed an extension to the 10-year-old footbridge to connect with his recently completed riverside housing development nearby. The court case has prompted a heated debate over whether a public building can be deemed a work of art. [...] He is demanding €250,000 compensation and the dismantling of Isozaki’s extension, or, if the new link remains, - €3m for “moral damages”.

(The Independent)