Fort Williams is a historic military fort located in Cape Elizabeth, Maine. Established in the late 19th century, it was primarily used for coastal defense during World War I and World War II. The fort features several structures, including the iconic Portland Head Light, a lighthouse that has guided ships since 1791. Today, Fort Williams is a public park, offering scenic views of the Atlantic Ocean and opportunities for recreation. Visitors can explore the fort's ruins, enjoy walking trails, and learn about its history through informational displays. The park is a popular destination for both locals and tourists.