America's Most Scenic Roads

Park Loop Road, Maine

The loop through Acadia National Park can be completed in an hour—when summer tourists aren’t clogging the 27-mile, two-lane artery. But whatever the season, you’ll want to give yourself time to appreciate the high ridgelines, sheer rock precipices, and rugged coast of the North Atlantic along the way. An ocean-side cavern dubbed Thunder Hole explodes with a plume of foamy surf as waves beat the shore.

Stop: Spend the day on a lobster fishing boat and take your catch home for supper. (robertsonseatours.com; $50)