1 Best Sight in New Haven, Mystic, and the Coast, Connecticut

The world's first nuclear-powered submarine, USS Nautilus (SSN-571)—and the first submarine to complete a submerged transit of the North Pole (in 1958)—was launched and commissioned in Groton in 1954. The Nautilus spent 25 active years as a showpiece of U.S. technological know-how and is now permanently docked at the Submarine Force Museum, a couple of miles upriver from where the sub was built. Visitors are welcome to climb aboard and explore. The museum, just outside the entrance to Naval Submarine Base New London, is a repository of thousands of artifacts, documents, and photographs detailing the history of the U.S. Submarine Force component of the U.S. Navy, along with educational and interactive exhibits.