Located within Beavertail State Park and built in 1749, Jamestown's Beavertail Lighthouse is one of the oldest along the Atlantic coast, and still signals ships into Narragansett Bay. Inside there's a small maritime museum and visitors can climb to the top for a small donation. The lighthouse is generally open to the public from June to September, but dates and times are subject to change: check the website before your visit to avoid disappointment.
Beavertail Lighthouse Museum
Rhode Island