Heyburn State Park near Plummer is the oldest state park in the Northwest, established in 1908. Its roughly 5,500 acres of forested hills, lakes and wetlands make it one of the most scenic parks in northern Idaho. The park is built around three lakes and offers swimming, boating, fishing and paddling, along with hiking trails through mature forest. The paved Trail of the Coeur d'Alenes passes through, giving walkers and cyclists an easy way to explore the area. A $5 per-vehicle entry fee applies, and camping runs $15 to $50 per night. Its long history and varied landscape make it a rewarding stop for a weekend trip.