The interpretive center sits near the actual terminus of the Oregon Trail, where exhausted emigrants arrived after months of overland travel from Missouri. The exhibits focus on the human side of the migration — what people carried, what they left behind, who made it and who didn't — and do a good job of communicating both the scale of the movement and the individual stories within it.
The center features full-scale wagon replicas and costumed interpreters during the main season. It is not a huge museum, but the subject is genuinely interesting and the presentation is honest about the hardships involved, including the displacement of Indigenous peoples that the emigrant trails accelerated. Worth an hour or two, especially if you are travelling with children who have some context for the history.