This paper utilizes a visitor survey conducted at an open-air museum in New Harmony, Indiana to discuss design guidelines for immersive technologies that support historic interpretation–specifically, the visitor’s ability to experience the past. We focus on three themes that emerged from the survey: (1) Visitors at this site skewed older, with nearly a quarter over 70; (2) Despite literature suggesting the opposite, visitors at New Harmony liked to learn from a tour guide; and, (3) Visitors said they wanted to “experience the past.” The very notion of a single “experience” of the past, however, is complicated at New Harmony and other historic sites because they interpret multiple periods of significance. Ultimately, our findings suggest immersive technologies must be suited for older visitors, utilize the tour guide, and facilitate visitors’ ability to “experience the past” in such a way that they feel immersed in multiple timelines at the same site.