Summer is Portland, Maine's busiest tourist season, but one of the best. Temperatures rarely above 80°F in July.

10. Portland, Maine

Few summer vacation experiences top sliding down Sleeping Bear Dunes in Michigan. Most of this vacation's activities are outdoors and free.

9. Sleeping Bear Dunes National Lakeshore, Michigan

Jekyll Island off Georgia's coast is a tranquil summer getaway. The island is a state park, thus its natural beauty is conserved.

8. Jekyll Island, Georgia

Grand County, Colorado is a relaxing summer destination. Summer brings hot temperatures, lively wildlife, and blooming plants and flowers.

7. Grand County, Colorado

Popular summer destination: North Carolina's Outer Banks. From one of the 130-mile stretch's villages, you can see Cape Hatteras or Outer Banks lighthouses.

6. Outer Banks, North Carolina

Cape Cod summers define a cottage getaway. Cape Cod has magnificent beaches, picturesque communities, and old-fashioned ice-cream parlours.

5. Cape Cod, Massachusetts

Yellowstone National Park has amazing scenery. The park covers 2 million acres across Montana, Wyoming, and Idaho.

4. Yellowstone National Park

Door County, Wisconsin, summer. Cherry orchards, beaches, cliffs, and B&Bs are in 19 peninsula villages. Lake Michigan to Green Bay: 300 summer miles.

3. Door County, Wisconsin

Mackinac Island in Michigan is reminiscent of 18th-century summers. On the island, there are no cars or chain hotels.

2. Mackinac Island, Michigan

The Grand Canyon's views, fame, and activities are family-friendly. Book early for summer, especially with school out.

1. Grand Canyon, Arizona

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