Just up US 1 is picturesque Camden (Chamber of Commerce +1 207 236 4404 or 800 223 5459), a shipbuilding town dating from the late 18th century. In the early 1900s it, along with tiny nearby Rockport, began attracting wealthy summer residents, mainly from Boston and Philadelphia. Enjoy the shops, restaurants, and galleries, and stroll down to the harbor, where windjammers offer cruises along the coast.
Just north of town, the 5,527-acre [2,236.7-hectare] Camden Hills State Park (+1 207 236 3109. Staffed May–mid-Oct.; Adm. fee) invites you to hike, camp, and picnic. Take the short road up 780-foot [237.7-meter] Mount Battie for fine views of Penobscot Bay.
At Lincolnville Beach hop the state ferry (+1 207 734 6935. Fare) for a 20-minute ride to Islesboro, where you’ll find good beaches and an entertaining display of local history at the Isleboro Sailors’ Memorial Museum (Mem. Day–Labor Day Mon.-Sat.; Donations), next to the 1850 Grindle Point Lighthouse. It’s possible to arrange a ride from the island to 70-acre [28.3-hectare] Warren Island State Park (+1 207 287 3824. Mid-May–mid-Oct.; Fare), where you can hike and picnic.
From the late 1700s to the late 1800s, Searsport (Chamber of Commerce +1 207 338 5900) shipyards built some 250 sailing vessels. Eight historic buildings at the Penobscot Marine Museum (Church St. at US 1. +1 207 548 2529. Mem. Day–mid-Oct.; Adm. fee) exhibit artifacts, paintings, ship models, and films. See the photos of early ship captains in the Old Town Hall, and don’t miss the scrimshaw exhibit.
In Prospect, Fort Knox (Fort Knox State Park. +1 207 469 7719. Fort open May-Oct.; Adm. fee) is Maine’s largest granite fortification, built to protect the Penobscot River Valley from the British in response to a boundary dispute with New Brunswick. Construction b egan in 1844, but the elaborate plans were never completed.