Carnival in the Trees February 27, 2016 | wendy Love this photo take at last year’s Fair. The trees!! Thanks for sharing via Instagram, @steelo916. Photo by D. Shorter Sr. Categories: Nevada County Fair and Nevada County Fairgrounds.Tags: beautiful, California's Most Beau, California's Most Beautiful Fairgrounds, carnival, fair, Fairgrounds, Grass Valley, Nevada City, Nevada County, and trees.