Visiting Soon - What activities would you recommend in the area?

My wife, kids (1 & 4 years old), and I are staying in Sevierville for a few days in August. Other than the tourist traps of Gatlinburg and Pigeon Forge, what would you suggest we check out that is cool but a little less crowded? We'd be into scenic drives, light hiking (probably with a stroller), fun kid activities, etc.