Unlike in previous centuries, when psychiatric hospitals reflected an institutional and isolating model of care, contemporary facilities are moving towards openness, integration, personalisation of spaces, giving them a homely atmosphere. The aim of this research was to determine the role of patient intimacy and autonomy in shaping the environment of contemporary psychiatric hospitals, as well as their impact on both safety and openness in these institutions. The study, in the form of a case study, examined Springfield University Hospital in London, which opened in 2023. The analysis included a site visit during the hospital's construction stage and an in-depth interview with the hospital's chief architect, who provided a detailed insight into the design concept. The hospital examined in this study can be considered a model example due to the adopted Evidence-Based Design approach. It is characterised by high-quality architecture, where daylight, greenery, art, and an innovative functional layout play a crucial role. Particular attention was paid to design solutions enhancing patient privacy and communal areas that maintain a balance between personal privacy and opportunities for social interaction with both patients and staff. Springfield University Hospital is an example of a modern psychiatric facility that harmoniously combines therapeutic needs with spatial and social aspects of care, setting a benchmark for future psychiatric facility designs.