Diagonal 00 located on the corner of Carrer del Taulat and the start of the Avinguda Diagonal, will hold all the administration offices and the future R + D headquarters of Spanish telecommunications company, Telefónica. The rhombus stands next to that small blue triangular building known as the Forum by Herzog and De Meuron, and the Spiraling Tower, designed by Zaha Hadid. Massip-Bosch Arquitectes Studio designed these 24 floors of glass and steel that will rise 110 metres over Barcelona city. It was supposed to be inaugurated this year and I would say they are giving it the final touches by the way it looked today.
Update: Learn more about the final result Diagonal Zero Zero today