Through 1:1 interventions the Urban Intervention Studio design spatial interactions into urban areas in transformation. We use the theme SPACES & INTERFACES as an open-ended vehicle for conceiving and affecting our spatial surroundings, addressing the relation between body, space and cultural context. Through careful site readings, we explore the physical, social and processual conditions of a place and create interventions that respond to and reinterpret this context. The contextual setting of SPACES & INTERFACES 2018 is the former shipyard and castle Kronborg of Elsinore, a site loaded with historic traces and new cultural functions. The shipyard has transformed into a multifunctional ‘culture yard’ and Kronborg’s world heritage site dominate the horizon. Together the area is termed ‘Culture harbour’ addressing a collective identity as historic landmark and framing present day cultural institutions including our collaborator Catch, a center for education within art & technology based on location. Each of this years seven intervention address specific site situations and extract, enhance and unfold present narratives and sensations by causing friction, balance, overlays, synergies or impulses. Hereby zones are created where different realities can interact (Galloway 2012: vii). The urban interventions become interfaces between experiencing beings and the cultural landscape they are embedded in. Interfacing can her both be understood as how the physical objects ”affords” (Gibson, 1979: 127) , attract and position a person at a particular spot at the site creating a scaled relation to the environment and as how the installation narrates the cultural layers of the context. The studio thus asks how the ongoing site transformations and potentials of the cultural layers can be experienced and communicated through urban interventions promoting new dynamic relations and interactions between visitors and site. An interface can connect phenomena and experiences and provide an embodied access to new exchanges in and with the environment. In each project, the installation as interactive artistic work aims at reframing the selected setting, taking “the situation as its ‘object’” (Massumi 2008:13). In this framework installations are conceived and also reflected on in relation to what they do and how they create interactions and affect. Hence, interfaces are not merely things, but more processual directions and effects that bring with them transformative power (Galloway 2012: vii). In this contribution we will analyze a selection of the interventions and suggest a vocabulary for how the notion of interfacing (in to) a cultural spatial situation through intervening with urban installations can be understood and unfolded and how ‘doing through interfacing’ can produce affect and sensation.