Orcas Island, the largest of the San Juans, is also the most beautiful of the islands. If you have time to visit only one island, make it this one. The island, which covers 58 square miles, is a particular favorite of nature lovers who come to enjoy the views of green rolling pastures, the hiking trails of Moran State Park, the forested mountains (at 2,409 ft. tall, Mount Constitution is the highest point in the islands), and fjordlike bays (Eastsound, West Sound, and Deer Harbor).