Great Parks of Hamilton County

City Nature Challenge

Explore Hamilton County in a new way and be a part of the 2021 City Nature Challenge! Invented by citizen science staff members Lila Higgins at the Natural History Museum of Los Angeles County and Alison Young at the California Academy of Sciences, the City Nature Challenge is an international effort for people to find and document plants and wildlife in cities across the globe.

Together with Cincinnati Parks, Great Parks is thrilled to participate in the 2021 City Nature Challenge! Join this bioblitz-style competition where cities compete against each other to see who can make the most nature observations, who can find the most species, and who can engage the most people. Using the iNaturalist app, discover, identify and catalog plants and animals in our region. After the bioblitz, all the information gathered will be identified and saved to a database. The information collected will be very helpful in community programming and education, assisting in controlling invasive species and help prioritize natural areas in need of further preservation efforts.

Compete against fellow Citizen Scientists in Cleveland, Columbus and across the world during this year’s bioblitz. See the 2021 City List and Worldwide Events on the City Nature Challenge website. Want to win bragging rights for Cincinnati and Hamilton County? Head out to your favorite park and start identifying the flora and fauna that you see!

To participate, download the free iNaturalist app. New to iNaturalist? Check out these tutorials to get started. While out making observations, if you feel sharing the location of a sensitive species could lead to its disturbance, you can opt to obscure the location. For more information on how to do this, read the iNaturalist statement on geoprivacy


Friday, April 30–Monday, May 3


All Great Parks



A valid Motor Vehicle Permit is required to enter the parks. Cost for residents of Hamilton County: $10 annual/$5 daily; other visitors: $16 annual/$8 daily. Otto Armleder Memorial Park and Fernbank Park are cooperative ventures with the City of Cincinnati; a Motor Vehicle Permit is not required. A Motor Vehicle Permit is not required at Great Parks Nature Center at The Summit.

See the list below for all of the City Nature Challenge events we’re hosting at Great Parks. Registration is required for select events and is listed in the description.

Great Parks reminds guests to be kind outside and wear a face covering and practice physical distancing when attending in-person events.