Named For St. Marys Mission, a Spanish mission located in the area Most People Don't Know First settled by the Spanish in the mid-16th century, St. Marys is the second oldest continuously inhabited city in the United States, the first being St. Augustine Notable Buildings Antebellum Orange Hall Top Annual Events Rock Shrimp Festival Best Kept Secret As a result of being the home of Kings Bay Naval Submarine Base, St. Marys Submarine Museum has one of the world's most extensive collections of submarine memorabilia and displays Don't Miss McIntosh Sugar Mill Tabby Ruins Nearby Cumberland Island. The Cumberland Ferry leaves from St. Marys dock