The purpose of the current work is to examine carefully the place of poetry on the Heideggerian consideration about the essence of art. Taking as starting point the famous conference of 1935-1936 entitled The Origin of the Work of Art, we will try to connect the general question about the essence of art with the meditation around the original experience of Being (Seyn). This experience is precisely the place of the poetic than happens on the work of art. To examine the scope of this formulation, we will not attempt to consider the Heidegger’s concern about the art as a reactivation of “aesthetics”, but we will indicate the need to frame his consideration about the poetic in what we called the Onto-Mythological Constitution of poetry, thus moving us away from the historical Onto-Theological Constitution of Metaphysics. By pointing out that poetry is taken by Heidegger as an experience of Being, we will indicate the place from which must be understood the peculiar Heideggerian attitude towards art.