The document outlines The MET Workshop, which examines three former airports - Mariscal Sucre in Quito, Elliniko in Athens, and Tempelhof in Berlin - as potential metropolitan commons. It discusses dilemmas around flows and enclosures, geopolitical imbalances, scale and history, private vs public vs commons, and top-down vs participatory planning. The workshop brings together urbanists, citizens, students, activists, and architects from the three cities to explore governance research, participatory design research, and social processes with the goal of coordinating local and transnational networks and ecosystems around the future of the three airport sites.