Peninsula State Park, established in 1909, is a 3,776-acre state treasure on Wisconsin's Door County peninsula. Nearly seven miles of Lake Michigan's Green Bay shoreline wrap around a landscape...

Gravel (4 acres) and Spider (23 acres) islands comprise the Gravel Island National Wildlife Refuge. These islands are located in Lake Michigan, east of the Door county peninsula. Along with...

Potawatomi, on the shore of Sturgeon Bay just northwest of the city of Sturgeon Bay, has gently rolling upland terrain bordered by steep slopes and rugged limestone cliffs. A 75-foot observation...