In what kinds of spaces are we most aware of the thoughts in our own heads? In My Dark Room, Julie Park examines places of solitude and enclosure that gave eighteenth-century subject access to their inner worlds: grottoes, writing closets, landscape follies, and the camera obscura, that beguiling "dark room" inside which the outside world in all its motion and color is projected. My Dark Room illumiates the spatial and physical dimensions of inner life in the long eigthteen century by synthesizing material analyses of diverse media, from optical devides and landscape architecture to women's intimate dress, with close readings of literary texts not traditionally considered together, among them Andrew Marvell's country house poem Upon Appleton House, Margaret Cavendish's experimental epistolary work Sociable Letters, Alexander Pope's heroid verse epistle Eloisa to Abelard, and Samuel Richrdson's novel Pamela. Park also analyzes letters and diaries, architectural plans, prints, drawings, painting, and more, drawing our attention to the lively interactions between spaces and psyches in private environments. Her innovative method of "spatisl formalism" reveals how physical settings enable psychic interiors to achieve vitality in lives both real and imagined.