This is the heart of the 1992 Olympic Site. Santiago Calatrava designed the large white tower as a communication tower for the Telefonica company. It was built to carry coverage of the games. The form of the tower is based on a Calatrava sketch of a kneeling figure making an offering. The base on which the figure 'kneels' is covered in broken glazed tiles in recognition of Gaudi. The orientation of the tower acts as a sundial by projecting the shadow of the central needle on the circular platform.