Flatirons Mineral Club Gem & Mineral Show 9595 Nelson Road, Building A, Longmont, CO 80501, Held at Boulder County Fairgrounds, Held in conjunction with the Boulder Model Railroad Club Annual Show, the annual Flatirons Mineral Club Gem & Mineral Show will include 15 dealers with gems, rocks, minerals, lapidary items, supplies, jewelry, fossils and more, exhibits, classes, demonstrations, children's activities and more. The Flatirons Mineral Club Gem & Mineral Show will take place December 12-14, 2008., 303-443-0993

Boulder County Fairgrounds Park 9595 Nelson Road, Longmont, CO 80501, Boulder County Fairgrounds Park is operated year-round under the management of Boulder County Parks and Open Space. It offers “rural and urban residents facilities for such events as trade shows, animal and livestock shows, fairs, rodeos and large parties and meetings." The Fairgrounds campground has 92 RV, camper and tent spaces., 303-772-7170

Vance Brand Civic Auditorium, The 600 East Mountain View Avenue, Longmont, CO 80501, A 1,377-seat, multi-purpose facility in Skyline High School, the Vance Brand Civic Auditorium is used for such live performances as school plays and professional concerts., 303-651-0401

Folks Festival 500 West Main Street, Lyons, CO 80540, Located on Highway 36 by the North St. Vrain River, The relaxing Folks Festival features liver music performances, the prestigious Folks Songwriter Showcase, songwriting workshops, and more. The Folks Festival will take place August 14-16, 2009., 303-823-0848

RockyGrass 500 West Main Street, Lyons, CO 80540, Held at the Planet Bluegrass Ranch on Highway 36, Bluegrass musicians meet along the banks of the St. Vrain River every year to play and compete for the three-day RockyGrass. It will take place July 24-26, 2009., 303-823-0848

UA Twin Peaks 10 1250 South Hover Road, Longmont, CO 80501, The UA Twin Peaks 10 shows the latest Hollywood movies., 303-651-2855

Longmont Symphony Orchestra 519 Main Street (Office), Longmont, CO 80501, The Longmont Symphony Orchestra's offers more than 10 concerts each year at the Vance Brand Civic Auditorium in Skyline High School at 600 East Mountain View Avenue., 303-772-5796

Boulder County Fair, Livestock Show and Rodeo 9595 Nelson Road, Longmont, CO 80501, Fairgrounds Building, Suite 200, The annual Boulder County Fair, Livestock Show and Rodeo offers a demolition derby, tractor pull, parade, Senior Pro Rodeo, carnival rides, attractions, livestock exhibits and shows, and more., 303-772-7170

Festival on Main [Friday, Aug. 28, 2009] Main Street, Longmont, CO 80501, Held in Longmont's Downtown District, Children's activities, live entertainment, delicious food, demonstrations, and more can be enjoyed at the annual Festival on Main., 303-651-8484