One of the best places to view lights in the city is the National Zoo. I recommend arriving about an hour before the zoo is transformed into the zoo of lights.
These pictures are not an accurate representation of the beauty you’ll see. It is definitely a family event. Your kids will enjoy being able to identify the many animal-shaped light displays.
The walk isn’t as daunting as a usual day trip to the zoo because only the main walkway is decorated and you won’t have access to the animals after dark.
Best of all its free, so grab the kids and go for a drive.