The subject disclosure is directed towards a technology in which metadata such as time, location and/or people identity data, and/or tag or album data that is associated with a photograph or other content may be used to serendipitously discover related content, from among many possible sources. The related content may be from any local or remote source, such as uploaded by multiple contributors corresponding to content captured during a social event, and may be presented in an integrated view in conjunction with a local photograph or other content. Different views of content and related content are automatically constructed from the metadata, providing different user experiences/scenarios without manual collection of the photos. Also described are notifications of newly detected related content, and face detection and recognition to obtain additional metadata.