| Name | Category | Address | Town | Opening hours |
|---|---|---|---|---|
| Lake Forest Open Lands: Everett Farm Nature Preserve | Nature preserve | 1050 W James Ct S | Lake Forest | — |
| Lake Forest Open Lands Association | Nature preserve | 13528 W Boulton Blvd | Lake Forest | Mon–Fri 8 AM–4 PM |
| Lake Forest Open Lands: Carruthers Nature Preserve | Nature preserve | 787-753 W Westleigh Rd | Lake Forest | — |
| Lake Forest Open Lands: Derwen Mawr Nature Preserve | Nature preserve | Golf Ln | Lake Forest | Daily 7 AM–7 PM |
| Lake Forest Open Lands: Middlefork Farm Nature Preserve (south grove) | Nature preserve | Middlefork Dr | Lake Forest | — |
| Lake Forest Open Lands: Middlefork Savanna (north grove) | Nature preserve | Middlefork Dr, Lake Forest, IL 60045 | Lake Forest | — |
| Lake Forest Open Lands: Skokie River Nature Preserve | Nature preserve | Skokie Hwy | Lake Forest | Daily 7 AM–7 PM |
| Lake Forest Open Lands: West Skokie Nature Preserve | Nature preserve | Stable Ln, Lake Forest, IL 60045 | Lake Forest | — |