This document discusses open spaces and what makes them successful. It provides examples of successful open spaces like the Liberty Lands project in Philadelphia and Stadtlounge in St. Gallen, Switzerland. Unsuccessful open spaces are also mentioned, like the area around Arch and Market Streets in Philadelphia. The document stresses that activation through activities and programming is key to ensuring open spaces are well-used and successful. It also proposes providing examples of how communities can activate their own open spaces.