A tensile, climbable system spans the narrow width of the former public laneway of Jones Alley, operating as a substrate for physical training and activity. Using a minimal material palette of steel plate, rope, and lightweight fabric, this project co-opts the unornamented back facades of Broadway and Bond Street to create a suspended realm occupiable by nonresidents of the alley. The structure invites a radical intimacy within the urban context: its verticality demands bodily-kinesthetic engagement from climbers as they negotiate novel movement pathways and its closeness to high-end residences lining Jones Alley creates a dense layering of private spatial conditions, separated only by the thin boundary of a brick wall.