Outside of the Bathhouse/Grand Promenade historic areas, Hot Springs National Park is primarily forested hills and valleys. The oak-hickory-pine forest type includes many other tree and shrub species. Wildflowers and blooming trees are especially beautiful in spring, while autumn brings many bright colors of leaves.
Maine ocean islands provide the only nesting sites for Atlantic puffins in the United States. Eastern Egg Rock in the midcoast region, Seal Island and Matinicus Rock at the mouth of Penobscot Bay, and Machias Seal Island and Petit Manan Island off the downeast coast provide habitat for more than 4,000 puffins each summer.