Acadia National Park, Maine
Acadia might be the first place that comes to mind when you think of fall colors at national parks—the destination attracts thousands of leaf peepers in autumn, so be prepared for some crowds. But it's totally worth it—traverse the park's more than 125 miles of hiking trails to discover amazing views, take a ranger-led bird-watching walk among the changing leaves, or rent a kayak and take in the scenery from the water.
When to Go: Peak fall colors generally pop up around mid-October. Check the region's leaf status on MaineFoliage.com.