14|AULA cd Architecture, Sculpture and painting depend specifically on space and are linked to the need to manage it, each with its own tools. What will be said here is, that the key of aesthetic emotion is a spatial function. Le Corbusier. L’espace indicible.1 Le Corbusier described ineffable space as the consummation of plastic emotion. 2. This quality of space, hard to understand and transmit, is the attractive in the phenomenon that is the church of Santa María del Mar. The desire to learn something from her moves us to write this article. There are possibly no new concepts in our outline but we are happy to propose new ways of looking at her. A first intimation of how to approach this space is to look at it from the question of lighting. This can easily be explained by an aphorism: Without light there is no space. However, to examine the architectural experience only from one of its components is an intellectual exercise that is encyclopedic as well as scholarly. The analysis cannot be done without considering, in suspension and simultaneously, the totality of the aspects that conform the architecture. We don’t believe it is easy to invoke light without highlighting matter, space, time, weight or gravity. Thus, we will opt for the analogy as method of apprehension. Instead of trying to dissect a phenomenon in abstract concepts that lack the eloquence of concrete ones, we prefer to establish relationships between similar phenomena. In other words, we prefer using phenomena in which light has a similar standing in the way we capture the feeling of the work. Concurring with Le Corbusier’s assessment on the link between sculpture, painting and architecture -through working with space and thought-, we believe that a cross between the spatial phenomena of the church and different works of art can steer us to different ways of looking at that ineffable quality of the spatial experience. The commentary is organized in three episodes, each related to one of the artists along some of his works. Each one is autonomous and collectively they don’t aspire to anything more than by themselves. The artists are Eduardo Chillida, Rembrandt and Edward Hopper. Eduardo Chillida: Light in the leading role of limits. The clean and net dialogue that arises between matter and space, the wonder of that dialogue in the limit, I believe plays a very important part, and it comes about because either space is very fast matter or matter is very slow space [...] Wouldn’t you say that limit plays the true leading role in space, just as the present, another limit, plays the leading role in time?