Architecture is under constant development in terms of design and construction.  Many architectural buildings that we encounter in our daily lives may have been inspired or have used another structure as a precedent. In this essay, I will be discussing how the contemporary design of Torre Agbar Tower echoed  Sagrada Familia as a precedent. La Sagrada Familia Basilica in Spain, located at the heart of Barcelona, is one of the greatest accomplishments of the 19th century. It was both designed and established by a Catalonian Architect Antoni Gaudi (1852-1926) also named as “God’s Architect” by (G. Vanhansberg, 2013). Gaudi’s forms of design and his ‘Modernismo’ technique were methods of a much more complicated and advanced architectural design, and to this day architects still, find difficulty in unraveling and understanding his techniques and design process. The original construction of Sagrada Familia began in 1883, and not so long after the period of The Art Nouveau (1890-1910) began to emerge. Originally, in 1882 the project was being designed by Francisco de Paula del Villar, whose project consisted of a much more smaller church on an extremely smaller site, however only the apse crypt was completed not long before his resignation on the project in 1883. Afterwards, the project was handed over to Gaudi which is still under construction for almost 140 years and will be completed in 202628.La Sagrada Familia, as a precedent, reflects the importance of worship which was an important aspect to Gaudi as he was a very religious Catholic. Moreover, the central role of the cathedral revolved around different forms and geometries which manipulated light and colour. The colour and light were considerably emphasized due to Gaudi’s request during the design process for the light to be harmonious. The design allowed the roof to enhance the light inside the structure, these were located between the columns and were constructed with pieces of golden and green glass. This created a reflection of the daylight which contributed to the plan through the graduated tones. In the Gothic Quarter, the east side has been intentionally designed to face the sun which emphasised the atmosphere of colour and light that reflected from the tiles. This leads Gaudi to state “Colour in certain places has the great value of making the outlines and structural planes seem more energetic.” ( Antoni Gaudi) Gaudi initially designed the Cathedral in the Gothic architecture style, however, it was then developed and improved upon to create a new architecture design style. The plan of Sagrada Familia shows clear indications of the geometrical design and design overall.The floor plan is in the shape of a cross which is reminiscent of the traditional Christian design. This not only presents the formation of his design, but also his thought process and consideration of symbolism.  The plan also shows the eighteen towers which have a significant meaning and relate to Christian Symbolism. The middle tower is specifically designed and dedicated to Jesus Christ, alongside it four towers are placed which represent the Gospels.  Above the apse, there is a constructed tower especially for Virgin Mary which can be clearly understood by the star placed on top. The remaining twelve towers indicate the twelve Apostles. All these eighteen towers deliver a perception of elevation of the central tower. Sagrada Familia as a precedent was echoed by a 1444m Torre Agbar (1999-2004)  a 21st-century skyscraper tower which was constructed by a contemporary architect Jean Nouvel (1945).  Nouvel was one amongst many to be strongly inspired and influenced by Gaudi’s architecture. The north side of the design of Agbar tower is situated in a way that there is a view of the Sagrada Familia. The tower has a bioclimatic system designed in order to adapt to the environment to have a less of an impact on nature and reduce energy usage.   Similarly to Gaudi, Nouvel had an interest in conveying light and colour as a combination of his design and the location of the tower resulted in a similar effect of light beams entering. The surface of the building is an important factor of the light emphasis as it consists of graduated glass and concrete slabs which transform from red to blue as you follow to the upper levels, creating a similar colour effect as in La Sagrada Familia. A very interesting characteristic of the design is the ability of the tower to light up with 16 million colours through the 4500 led lights installed in the structure. Which look similar to the mosaic design used by Gaudi. The design includes a direct reference to the Cathedral as one side of the construction represents the bell towers of La Sagrada Familia. The floor plans of the tower consist of a contemporary geometrical design that incorporate pillars for support as the tower is constructed of two central concrete widths. The bullet shape of the design emerges from the two oval cylinders found in the structure which never meet at a point and leave the inner cylinder to be hidden by glass and steel.Most of the architecture that we view today was once based on an earlier construction or design which leads us to always return to the origin of design and architecture itself as “Originality consists in returning to the origin.”(Antoni Gaudi). A Precedent is like a librarywhich is filled with the knowledge of the origins and learnings of the past, creating a basis for architects to learn from and develop upon. From modernism architecture, ideas and knowledge can be gained in order to develop origins and construct contemporary architecture.