Giselle Sebag

I’m Giselle Sebag (MPH, LEED AP)—an architect, urban planner, and public health practitioner focused on improving health by design. I work at the intersection of urban planning, public health, mobility, climate resilience, and equity, helping cities and civil society partners translate evidence into place-based strategies that improve everyday life—how we move, what we breathe, how safe we feel, and how connected we are. I serve as Executive Director of the International Society for Urban Health (ISUH), a global network advancing the field of urban health and strengthening the bridge between evidence and real-world action. I also founded Vital Cities, an evidence-driven advisory practice that partners with city governments, the private sector, and mission-driven organizations to ensure urban investments deliver the greatest possible impact—improving health, quality of life, and economic outcomes. My career has been built in the “in-between spaces” where change is hardest—and most promising: between planning and health, policy and design, infrastructure and community life. I’m especially interested in how practical shifts—safe walking and cycling, public-space activation, access to nature, healthier housing and neighborhoods, and inclusive community life—can transform places and reduce inequities. I’m based in Barcelona and New York and work internationally. What I offer as a mentor: Strategic, practical support for mentees who want to create measurable impact across disciplines. I can help you (1) clarify your direction and refine your professional story, (2) translate research and data into implementable urban strategies, (3) navigate cross-sector stakeholder dynamics, and (4) apply a place-based approach that breaks down silos and builds shared purpose. Bring a real challenge—an initiative that’s stuck, a career crossroads, or a project that needs a sharper strategy—and we’ll work together to move from insight to action.