Tags:   **Abstract** Wellness centres are increasingly designed as environments that support physical   Mental   And emotional wellbeing through spaces for relaxation   Therapy   Fitness   And personal restoration. The quality of these environments is influenced not only by their functional organization but also by the sensory experiences they provide to users. Elements such as light   Sound   Colour   Texture   Smell   Temperature   And spatial character can affect comfort   Mood   Relaxation   And perception of the environment. This study examines the effect of sensory design on user comfort in wellness centres   With emphasis on how architectural environments can be intentionally designed to support positive user experiences. The study focuses on key sensory design elements that contribute to comfort within wellness environments. Natural and artificial lighting   Acoustic conditions   Material textures   Colour schemes   Indoor air quality   Thermal conditions   And visual connections to nature are considered in relation to user perception. The arrangement and character of spaces such as treatment rooms   Relaxation areas   Exercise spaces   Waiting areas   Meditation rooms   And circulation zones are also examined. Understanding the sensory qualities of these spaces can help designers create environments that are calming   Comfortable   And appropriate for different wellness activities. Lighting is considered an important component of sensory design because variations in intensity   Colour temperature   Glare   And daylight availability can influence visual comfort and emotional responses. Similarly   Acoustic design can reduce unwanted noise and provide appropriate levels of sound privacy within treatment and relaxation areas. Material selection and surface finishes can contribute to tactile and visual comfort   While carefully controlled colour schemes may reinforce feelings of calmness and relaxation. These elements can be coordinated to create coherent sensory experiences rather than being treated as isolated design features. The study also considers the relationship between sensory design and environmental conditions within wellness centres. Thermal comfort   Ventilation   Humidity   Indoor air quality   And natural elements can influence how users perceive and respond to wellness spaces. Incorporating vegetation   Natural materials   Daylight   Water features   And views of outdoor landscapes may enhance connection with nature and contribute to psychological comfort. However   Sensory stimulation needs to be carefully controlled because excessive brightness   Noise   Strong odours   Intense colours   Or inappropriate textures may produce discomfort rather than relaxation. User characteristics and the specific functions of wellness spaces may also influence sensory preferences. Different users may respond differently to lighting levels   Sound conditions   Colours   Materials   And spatial enclosure depending on age   Activity   Personal preference   And sensitivity to environmental stimuli. Spaces designed for active exercise may require different sensory conditions from meditation   Massage   Or therapeutic areas. Providing opportunities for users to control or adjust selected environmental conditions can therefore improve adaptability and support a wider range of comfort requirements. The study aims to assess how sensory design strategies influence user comfort in wellness centres and to identify architectural approaches capable of creating supportive and restorative environments. The findings are expected to contribute to the development of wellness facilities that integrate functional planning with human-centred sensory considerations. By addressing visual   Auditory   Tactile   Olfactory   And thermal experiences in an integrated manner   Architectural design can enhance comfort   Satisfaction   Relaxation   And overall wellbeing within wellness-centre environments. **Keywords:** Sensory design   User comfort   Wellness centres   Environmental psychology   Lighting design   Acoustic comfort   Thermal comfort   Material selection   Colour psychology   Biophilic design   Indoor environmental quality   Spatial experience   Restorative environments   Wellbeing