More than twenty Greenpeace activists climb the Sagrada Familia, Gaudi's master-work, in Barcelona. They display two banners on cranes with the message "Save the Climate" (Salvad el Clima) and "World Leaders, Make the Climate Call." Greenpeace holds the action on the first day of UNFCCC Climate Change Talks in Barcelona. These meetings are the last negotiating session before the historic UN Climate Change Conference in Copenhagen in December 2009 (COP15). Greenpeace demands a strong international climate change treaty.