This thesis presents three storytelling systems for interactive point-of- view narratives using tangible interface technology. The focus is the design and development of computational story models and interfaces that enable users to experience new forms of interaction with stories in the digital medium. Specifically, I propose that having multiple tightly related character viewpoints can be used as a means of structuring comprehensive and coherent interactive story experiences. Furthermore, I also claim that by using tangible interfaces that are tightly integrated into the narrative model and story content, users can have rich interactive story experiences in which the interaction/interface does not distract from their engagement in the story.