
More About Indianapolis City Nature Challenge
The City Nature Challenge (CNC) is a global community science event where people work together to document urban wildlife. In April 2026, Indianapolis and communities across Indiana will join more than 600 cities worldwide in this friendly competition to explore, photograph, and record local biodiversity.
Free to sign up! For more information and to register, please visit Click for Details
Free to sign up! For more information and to register, please visit Click for Details
Did you know you can follow any of our 175 Special Interest calendars and stay informed better than ever before? See them here. You can also create your own public or private calendar here. Post events to your calendar and ours at the same time! Terms and conditions may vary based on the policies of your local Town Planner publisher.
To learn more, watch our intro video!

