Grindle Point Lighthouse

Grindle Point Light was established in 1851 on the offshore island of Islesboro, a narrow island in Penobscot Bay that has long been a critical point for maritime navigation. The lighthouse’s primary purpose was — and still is — to guide mariners safely into Gilkey Harbor, a small but important harbor used by fishing boats, ferries and recreational vessels. Its distinctive square brick tower stands as a classic example of mid-19th-century lighthouse construction and remains a beloved landmark on the island’s waterfront.

Visitors can reach Islesboro via the Maine State Ferry System, which runs regular ferries from the mainland town of Lincolnville. The lighthouse sits conveniently at the town ferry landing, making it one of the first sights visitors see when arriving on the island. During July and August, and continuing until Maine Open Lighthouse Day in September, the keeper’s house is open to the public as the Sailor’s Museum, where guests can explore exhibits on the island’s maritime history, the lighthouse’s operation and the lives of those who maintained the light over the years.