The document provides information about the IDEAS CITY Festival that will take place from May 28-30, 2015 in New York City. The festival theme is "The Invisible City" and will explore questions of transparency, citizenship, expression, participation and the quest for visibility in cities. The festival will include talks, panels, films and discussions at the Great Hall of the Cooper Union on May 28th. Panelists will discuss issues like designing cities for the future, the role of data and privacy in democracy, and networks and infrastructure. The festival aims to create networks between thinkers from different fields and engage the public in addressing civic issues.