Photo album management, an application of content-based image browsing/retrieval, has attracted much attention in recent years. Identities of individuals appearing in the photos are the most important aspect for photo browsing. However, face recognition generally doesn 't work effectively in such situation due to the large variations in pose, illumination and sometimes poor quality of images. In this paper, we present a system for browsing photo albums. The system automatically detects and stores information about the locations of faces in the photos. A similarity function based on face arrangement is defined. Photos are then clustered based on the similarity function using a clustering algorithm proposed in this paper. The system also represents photos of an event using a composite image. The composite image is built from representative faces and an image that represents the event. Experiments indicate that the face arrangement features are effective in representing the semantic content of the photos and are appropriate for photo albums.