If you're craving some good old-fashioned entertainment, check whether an exhibition or carnival is on at Nevada County Fairgrounds. All the fun of the fair awaits!
You'll have no end of sightseeing choices when spending time in Grass Valley. Nevada County Fairgrounds is a great place to start here, but there are lots of other interesting places to experience. Empire Mine State Historic Park, Tahoe National Forest Headquarters, and Nevada County Narrow Gauge Railroad Museum are near the outdoor exhibition area and will round out your day nicely.