John B.
Yelp
The free parking between this place and the farmers market was nice (walkable through the park to the downtown area, and while signs say you're not supposed to do that there was plenty of parking and no one stopped me from walking a long way and then coming back here). Free and easy parking is no small thing; I remember someone once asking me where the Smithsonian parking garage was and thinking "Oh, you poor sweet child". Anyway, I wasn't really sure the museum would be worth my time, but it was free so I figured I'd drop in and give it a look.
I was pretty impressed by it. For anyone not from Tennessee (and Nashville is a tourist town so there are a lot of us), this does not seem like a particularly interesting state. However, the museum's frame is a chronological journey through history with mostly familiar events being told from a "But now, in Tennessee" perspective. The colonial and civil war history is expected, but little tidbits came up. After all, the Manhattan project and the Scopes Monkey Trial are interesting, but not particularly tied to geography in my mind.
The museum offers high production values, with a lot of lively display screens and some well-produced short movies. The narration mixes perspectives, including several native American speakers discussing their own history in context. I've never seen an unbiased exhibit on the history of anything, but here they are relatively good about being modern, incorporating diverse perspectives, and giving some sense of nuance and context. There's not a ton of depth, and it's not a huge museum, but it would be a good educational experience for children (and adults).
There were very clean bathroom facilities, a fountain with a bottle filler, and an outdoor deck with rocking chairs looking over the park. It's definitely a convenient place to visit, but in addition to that it's certainly worth an hour or two.