An analysis of the relation between the theories of psychoanalysis (the structure of the psyche, linguistics and perception), in particular those of Jacques Lacan, and theories and compositional strategies in architecture, focusing on the writing and projects of Peter Eisenman. There are extended discussions of the thought of figures such as Sigmund Freud, Ferdinand de Saussure, and Jacques Derrida, and the work of architects such as Leon Battista Alberti, Francesco Borromini, Giuseppe Terragni, and Ludwig Mies van der Rohe. Concepts analyzed in relation to architecture include the signifier and signified in Structural Linguistics, deep structure and surface structure, differance in Deconstruction; latent content and manifest content in the dream work of Freud, as well as condensation and displacement, picture thinking and image making; Lacanian concepts of the anchoring point and sliding in language, the mirror stage, ego formation, the matrix and mechanisms of language, and primordial perception. Concepts of Eisenman for architecture which are analyzed include apperception, scaling, decomposition, folding, blurring, the figural, the interstitial, and interiority.