The First International Green Cities Conference will bring together mayors, ministers, city leaders, UN agencies, civil society, private sector actors, and financial institutions to celebrate achievements, exchange knowledge, foster partnerships, and mobilize resources for the adoption of integrated urban solutions. The conference will also mark two important milestones. It will present the FAO Green Cities Criteria, a set of conditions that cities must meet to be recognized as FAO Green Cities. It will also launch the Green Cities Commitment Pledge, a symbolic wall and digital space where mayors can publicly affirm their dedication to concrete sustainability goals for their cities.