Perched off the coast of Rockport, Massachusetts, stands the Cape Ann Light Station, commonly known as the Thacher Island Twin Lights. These iconic twin lighthouses are the last operational twin lights in the United States, guiding mariners safely past the treacherous Londoner Ledge since their establishment.
History of Cape Ann Light Station
Established in 1771 under British rule, the original twin lighthouses on Thacher Island were the first in North America designed to mark a hazardous location rather than a harbor entrance. They were constructed to warn sailors of the dangerous Londoner Ledge, a reef responsible for numerous shipwrecks.
The current granite towers, each standing 124 feet tall, were erected in 1861, replacing the original structures to accommodate advancements in lighthouse technology.
Cape Ann Light Station Architecture and Design
The towers are constructed from New Hampshire granite, featuring a conical shape that tapers from a 30-foot diameter at the base to 18 feet at the top. Each lighthouse was originally equipped with a first-order Fresnel lens, measuring approximately 10 feet in height and weighing several tons, enhancing the visibility of the lights to mariners. The interior houses a 156-step cast iron spiral staircase leading to the lantern room.
Location and Surroundings
Thacher Island is situated about a half-mile off the coast of Rockport, Massachusetts, encompassing approximately 50 acres. The island offers visitors scenic trails, diverse wildlife, and panoramic views of the Atlantic Ocean. The northern part of the island is designated as the Thacher Island National Wildlife Refuge, providing a habitat for various bird species.
Visiting Cape Ann Light Station
A visit to the Thacher Island Twin Lights offers a unique blend of natural beauty and historical significance.
Getting There
Access to Thacher Island is primarily by boat. The Thacher Island Association operates a launch service on Wednesdays and Saturdays from mid-June to mid-September, departing from Rockport. Reservations are required and can be made by calling 617-599-2590. Private boats are also welcome; moorings are available on a first-come, first-served basis.
Visiting Hours
The island is open to visitors from mid-June until mid-September. While specific hours may vary, day trips are typical, allowing ample time to explore the island’s features.
Admission
A nominal fee is charged for the boat service operated by the Thacher Island Association. There is no additional admission fee for exploring the island.
Guided Tours
While formal guided tours may not be available, the island features a visitor center and museum where guests can learn about the history of the lighthouses and the island. Visitors can also climb the tower for a panoramic view of the surroundings. Each summer, one of the two towers are open to visitors.
Visitor Guidelines
- Respect all signage and barriers to protect the lighthouse and its surroundings.
- Stay on designated paths to prevent dune erosion.
- Be mindful of changing tides and coastal conditions when visiting the nearby beach.
- Follow local regulations to ensure a safe and enjoyable visit.
Plan Your Visit
A trip to the Cape Ann Light Station on Thacher Island offers a unique opportunity to experience maritime history amidst the natural beauty of coastal Massachusetts. Whether you’re a history enthusiast, nature lover, or simply seeking a peaceful retreat, the twin lights provide a memorable destination. Don’t forget to bring your camera to capture the stunning vistas and historic architecture.