Design an architectural structure that embodies dread and mystery, challenging traditional notions of safety and comfort. The structure should convey unease through unconventional shapes, dramatic lighting, and materials that evoke decay or surreal alienation. Consider environments like an isolated cliffside, a dense foggy forest, or a barren wasteland to enhance the eerie atmosphere. Think about how the structure interacts with its surroundings and how its internal spaces manipulate perception and emotions.