Plains Conservation Center POSTED BYLaura Upcoming Events: Free Day at Plains Conservation Center Thursday, February 23, 2023 | 10:00 am to 4:30 pm | FREE Free Day at Plains Conservation Center Saturday, March 11, 2023 | 10:00 am to 4:30 pm | FREE Free Day at Plains Conservation Center Thursday, June 15, 2023 | 10:00 am to 4:30 pm | FREE Free Day at Plains Conservation Center Saturday, July 15, 2023 | 10:00 am to 4:30 pm | FREE Free Day at Plains Conservation Center Thursday, August 17, 2023 | 10:00 am to 4:30 pm | FREE Plains Conservation Center 21901 E. Hampden Ave.Aurora, CO 80013 Get Directions