Location: National Park Service, 1849 C St NW, Washington D.C., DC 20240, United States See map: Google Maps 2026 Free Entrance Days in the National ParksDates: 11/11/2026Time: See website for details. Location: Bluff Lake Nature Center, Martin Luther King Junior Boulevard, Denver, CO, USA See map: Google Maps Bird Walks at Bluff Lake Nature CenterDates: 12/05/202601/02/2027Time: See website Location: Cottonwood Farm, 10600 Isabelle Rd, Lafayette, CO 80026, United States See map: Google Maps Christmas Trees at Cottonwood FarmDates: 11/27/202611/28/202611/29/2026Show more datesHide these dates11/30/202612/01/202612/02/202612/03/202612/04/202612/05/202612/06/202612/07/202612/08/202612/09/202612/10/202612/11/202612/12/202612/13/202612/14/202612/15/202612/16/202612/17/202612/18/202612/19/202612/20/202612/21/202612/22/202612/23/202612/24/2026Time: Sat-Sun 9:30 AM to 7 PM | M-F 11 AM to 7 PM Location: Cheyenne Mountain Zoo, 4250 Cheyenne Mountain Zoo Rd, Colorado Springs, CO 80906, United States See map: Google Maps Electric SafariDates: 12/04/202612/05/202612/06/2026Show more datesHide these dates12/07/202612/08/202612/09/202612/10/202612/11/202612/12/202612/13/202612/14/202612/15/202612/16/202612/17/202612/18/202612/19/202612/20/202612/21/202612/22/202612/23/202612/26/202612/27/202612/28/202612/29/202612/30/202612/31/202601/01/2027Time: See website Location: Carpenter Park Fields, Colorado Boulevard, Thornton, CO, USA See map: Google Maps Thornton Winterfest 2026Dates: 12/11/202612/12/202612/13/2026Time: Fri, Dec 11 2026, 6:30 - 9pm | Sat, Dec 12 2026, 10am - 9pm | Sun, Dec 13 2026, 5 - 9pm Visiting Sedona, AZ
