As majestic as we find the exterior, the interior of Sagrada Familia is far more spectacular. The theme of nature that one notices outside the cathedral is obvious when you enter. The columns are meant to depict a forest with their branches spreading out to support the canopy. There is maximum use of natural lighting through the expansive stained glass windows. The columns are made from various stone depending on the load that they are designed to carry and the movement of the light following the sun gives the impression of the filtered light in a forest.

The stained glass windows are each dedicated to saints. Note the detail. I managed to find St Michael.

The full length of the church shows the altar.