Searching for the top things to do at Maine’s Acadia National Park? Join the 3.5 million or so annual visitors who have fallen in love with this spectacular, mountain-crowned coastal gem since it opened more than a century ago. Revel in the fresh air and natural social distancing as you choose each day’s adventures. Drive the spectacular 27-mile Park Loop; get your steps in on more than 150 miles of hiking trails; and save time for these don’t-miss memory makers. Entrance pass required ($30 for vehicles, good for seven days).