As far as formal sights go, Monhegan  has exactly one—but it’s a great one. The Monhegan Museum (Lighthouse Hill, 207/596-7003, www.monheganmuseum.org , 11:30 a.m.–3:30 p.m. daily Jul.–Aug.; 1:30–3:30 p.m. late Jun. and Sep.) inhabits the keepers’ house of the island’s granite lighthouse, which is in turn perched on the bare crown of the island’s highest point.
As befitting the “artists’ island,” the museum contains paintings by many of Monhegan’s most distinguished artists, as well as an exhibit on lobstering, old photographs, and antique children’s toys scattered throughout its many rooms. Another exhibit tells the story of the Maliseet people, the island’s earliest inhabitants.