HEART, evaluating nature-based solutions (BGS) on public health and well-being in European cities, ran from September 2022 to February 2024. Stakeholder engagement (WP1) involved interviews, workshops, and questionnaires to enhance involvement (D1.1 D1.2). Frameworks and tools for BGS impact assessment (WP2, D2.1 D2.2 D2.3) were developed. Clinical validation studies (WP3, D3.1 D3.2 D3.4 D3.5) targeted representative diseases, updating ICT tools based on feedback (WP4, D4.1 D4.2). Deployment and testing (WP5) occurred in clinical and non-clinical settings, refining methodologies (D5.1 D5.2 D5.3). Dissemination efforts (WP7) raised awareness through communication materials and online events (D7.3 D7.7). Exploitation strategies (WP8, D8.1) refined business plans for market entry. Coordination, ethics compliance (WP9, D9.4 D9.5) and legal adherence (WP10) were ensured throughout. Participants were fully informed, with the freedom to withdraw from the study (WP10).