There is no Copper Falls State Park in Illinois. However, there is a Copper Falls State Park in Wisconsin.

Copper Falls State Park in Wisconsin is a popular destination for nature lovers and outdoor enthusiasts. The park covers over 3,000 acres and is known for its stunning waterfalls, rolling hills, and pristine forests. Some of the best reasons to visit the park include hiking, fishing, camping, and wildlife watching.

One of the most popular attractions within the park is the Copper Falls Trail, which is a 1.7-mile loop that takes visitors past the park's namesake waterfalls. Other notable points of interest include the Loon Lake Nature Trail, which offers stunning views of the lake and surrounding forest, and the Bad River, which is home to a variety of fish and other wildlife.

Interesting facts about the park include that it was established in 1929 and was one of the first state parks in Wisconsin. The park is also home to a number of historic structures, including a Civilian Conservation Corps (CCC) camp and a log cabin built by early settlers.

The best time to visit Copper Falls State Park is during the summer months, when the weather is warm and the park is bustling with visitors. However, the park is also beautiful in the fall when the leaves change color and in the winter when the waterfalls freeze over.