CFWphotography/Getty Images

It may be one of the smaller national parks, but Acadia National Park is certainly one of the most scenic in the U.S. Whether you go in the fall to enjoy the stunning foliage, or visit in the summer to swim in the Atlantic Ocean, Maine is a beautiful area to tour. Seaside villages offers shops for antiques, fresh lobster, and homemade fudge, while the national park houses rugged trails for hiking and biking.