Giselle Sebag (MPH, LEED AP) is a trained architect, urban planner, and public health specialist, serving as Executive Director of the International Society for Urban Health (ISUH) and the Founder of the Vital Cities Collective. With nearly two decades of global experience, she leads efforts with local governments, communities, NGOs, philanthropy, and the private sector to design healthier, inclusive, and sustainable cities by addressing urban determinants of health through cross-sector collaboration.