For Off-the-Beaten-Path Exploration
> Maine: More than 2 million people each year visit Acadia National Park, about an hour’s drive from Bangor. Here you’ll find 125 miles of hiking trails to explore alone, or with a park ranger along rocky coastline.
> Texas: Less than a two-hour drive from Houston, you’ll find Big Thicket National Preserve, ideal for hiking, bird-watching, canoeing, and fishing.
> Colorado: Rocky Mountain National Park, a two-hour drive from Denver, has some of the oldest rocks in the entire National Park System some more than 1.8 billion years old.
> Ohio: Cuyahoga Valley National Park. The valley of this “crooked river” near Cleveland is a stop for monarch butterflies, which can be viewed by the hundreds during their annual migration.