In his installation work, the Bulgarian artist Vitto Valentinov creates designated areas for guided interactions. Visitors are invited to engage in experiments that often require minimal physical activity but full concentration of body and mind. In Portals he encourages the visitors to participate in several site-specific, minimalist installations. For each of them, they follow short instructions and perform a physical action: one installation, one task, one action. By performing simple gestures, the visitors become part of collective creative events – artistic rituals.