Home to the USS Nautilus, the world's first nuclear-powered submarine, docked in Groton and open to walk through.
Why it matters
Nautilus crossed the North Pole submerged in 1958 — you can stand in the exact control room that did it.
Nearby in Connecticut
Connecticut State Capitol
Hartford, CT
Mystic Seaport Museum
Mystic, CT
Mark Twain House and Museum
Hartford, CT