Locast is an experimental project developed by MIT Mobile Experience Lab in collaboration with RAI - RadioTelevisione Italiana. It is an innovative platform for sharing and discovering location-based user-generated videos and production quality multimedia content provided by RAI New Media. It consists of a combination of Mobile and Wearable Computing elements supported by a distributed Web application. Contents gathered from RAI TV historical archives and User- Generated ones are linked to physical locations in Venice in order to be accessible to all those visiting the space.