Boston Area City Nature Challenge 2026

Have fun, contribute to science, and explore nature anywhere, from your backyard to urban forests, parks, coasts, or wherever you are, while connecting with communities worldwide in the 2026 City Nature Challenge.

Where: Urban biodiversity from the I-495 corridor to Stellwagen Bank, including Cape Cod and the islands.

The City Nature Challenge is being organized on a global scale by the California Academy of Sciences and the Natural History Museum of Los Angeles County.

Banner photo credits: Boston Pixabay © | Mining bee © Claire O'Neill | Sessile bellwort and American Oystercatcher © Daniel Onea