Folsom is almost a 30 minute drive outside of Sacramento. According to TripAdvisor, the Folsom Prison Museum is one of the highest rated attractions there. For only a $2 entry fee, you'll experience the prison's history dating back to the 1880's. Visitors are especially intrigued by the many tools created by prisoners who tried to escape. One of the focal points of the museum is a shrine dedicated to Johnny Cash. In 1968, Cash recorded a live album there named "At Folsom Prison." For more information, visit the prison museum's website.