Technology of Sensations frames Alvar Aalto's Vyborg Library as a modernist work whose technical intelligence is inseparable from light, colour, acoustics and bodily perception. Its iconic idea is that preservation must conserve not only object-form but sensory operation: the building's value resides in how technological systems generate atmospheric experience. The theoretical contribution lies in expanding conservation from material repair to phenomenological continuity, treating modern heritage as an active configuration of surfaces, light modulation, sound and social use. Methodologically, the volume combines restoration documentation, technical analysis, historical interpretation and site-based seminar exchange, producing a rare account of conservation as collective knowledge practice. Its bridge to heritage theory is precise: modernism is not preserved by freezing an image, but by understanding how architectural devices organise perception, cultural memory and everyday public life across political borders.