In 2014 Agenda 21 for Culture, promoted by the Culture Committee of United Cities and Local Governments (UCLG), celebrates its tenth anniversary. With the aim to capitalize on the knowledge accumulated on the issue of culture and sustainable local development, it has recently launched a ''god practices'' database available online. The projects presented have been selected on the basis of criteria such as innovation, participation, sustainability, efficiency, transversality and reproducibility. The World music center of Aarhus (Denmark), the World city forum of Milano (Italy), the Ha long ecomuseum (Vietnam) and the Emilio Balcarce tango orchestra school in Buenos Aires (Argentina) are some of the good practices included in the database. UCLG now invites other cities to share their experiences through the database.