Sleep No More Seoul is an immersive performance venue that reimagines the historic Daehan Theater—once a landmark of Korean cinema—as a spatial narrative platform for Punchdrunk’s globally acclaimed production Sleep No More. In close collaboration with Punchdrunk, the architectural renovation responded to performance-specific spatial and operational demands, delivering an environment that enables free-roaming exploration while fully complying with local building codes. The design translated the production’s unique requirements into architectural solutions, integrating complex circulation systems, layered spatial sequences, and scenographic adaptability within the regulatory framework. To realize Punchdrunk’s vision of a fragmented, non-linear theatrical experience, the architecture introduced circulation strategies that supported both immersive audience movement and backstage efficiency. While the overall spatial logic followed Punchdrunk’s narrative structure, the architectural intervention enabled its execution—reconfiguring floor plates, vertical access, and egress routes to ensure the safety compliance without compromising atmosphere. Corridors were calibrated in scale and rhythm to modulate visibility and movement, while discrete performer pathways were embedded throughout the structure to allow seamless transitions behind the scenes. Punchdrunk views architecture, lighting, set, and furniture as active storytelling tools. In this spirit, Sleep No More Seoul was conceived not simply as a venue, but as a narrative environment. The renovation transformed the Daehan Theater into an immersive world where architecture itself performs—blurring the boundary between space and story, and allowing each visitor to become the protagonist of their own experience.