Smart Engineering and the Construction Board of La Sagrada Familia signed a contract on September 23th, 2014, to collaborate in the construction of the tower dedicated to Jesus. This will be a massive concrete element strongly reinforced with a top height of 74 metres. Such an element is an engineering challenge. Smart Engineering will design the concrete to be used in the construction of this tower. Such a concrete must be a high-performance concrete (with characteristic compressive strength larger than 60 MPa) with high workability (more than 70 cm of flow extension) and without segregation during its pouring. Smart Engineering takes part again in a high technological and innovative engineering project.