New London has been undergoing a rennaissance. There are a lot of interesting shops, galleries, historic districts, murals and more. The USCG Barque Eagle should be back in home port which we'll be able to tour. I went down there a week ago and was impressed on how much the city changed for the better. Sunset is at 7: 48 PM for those of us who'd like to stay later.
Here's a few ideas: http://www.newenglandtravelplanner.com/go/ct/ct_shore/new_london/sights.html
NOTE: EAGLE is moored up at City Pier in downtown New London adjacent to the train station