Plains Conservation Center POSTED BYLaura Upcoming Events: Free Day at Plains Conservation Center Thursday, August 18, 2022 | 9:00 am to 2:00 pm | FREE Free Day at Plains Conservation Center Saturday, November 19, 2022 | 10:00 am to 3:00 pm | FREE Free Day at Plains Conservation Center Thursday, December 15, 2022 | 10:00 am to 3:00 pm | FREE Plains Conservation Center 21901 E. Hampden Ave.Aurora, CO 80013 Get Directions