The centre of the reflections of Tommaso Palamidessi (1915 1983), starting from the first writings of the 1940’s, is the providing of the spiritual techniques capable of carrying forward the study of the metaphysical reality to anexperimental plane. The f ull realization of his “experimental metaphysics” is constituted by Archeosophy, understood as the experimental way, presented by him in 1968 and developed in the following years. The concrete basis of every supersensible experimentation for Palamidessi is the awakening of those which are the centres of force, identified with the “spiritual senses” of the Fathers of Church, which as such allow the superior worlds to be rendered sensible. In the thought of Palamidessi therefore the possibility of an experimental metaphysics and of a spiritual practice become implementable once the techniques of awakening and of the development of these subtle centres are provided.While taking into account the thematic vastness of the various “asceses” proposed by Archeosophy, with the relative methods, experiments and exercises, in this study we synthetically present three orders of spiritual practices suggested by Palamidessi in his writings, and widely diffused among Archeosophers: the meditation on the centres of force, the spiritual exercises with the “rite of the eucharistia lucernaris ” and the Cardiognosis with the “prayer to the Sapience".