Governor Knowles State Forest, Grantsburg: Find jack, white and red pines in this forest along the St. Croix River in northwestern Wisconsin. 325 Highway 70, Grantsburg, (715) 463-2898.

The tree is lit by 2,000 multi-colored LED lights. It's decorated with ornaments made by students across Wisconsin to celebrate 125 years of Wisconsin's state parks. One seventh-grader said, "To me, ...