The Nativity façade was built before work was interrupted by the civil war. This is the façade which bears the most direct Gaudi influence. It consists of four bell towers and three large portals. From left to right stands the Portal of Hope, the Portal of Charity and the Portal of Faith. By looking towards the top of the portals, one can see that they symbolize grottos.
In fact, throughout the whole Nativity Façade, there is a clear theme of nature, as many of the sculptures symbolize vegetation, people and birds. This is a celebration to the ever changing nature and to the creators of all forms of life.