20. Visit a Class
One of the best non touristy things to do in NYC is taking a class to refresh or expand your knowledge on a subject you are interested in. In NYC, there are many classes you can attend with your friend, partner or by yourself. You can take classes in cooking, drawing, sports, arts and much more. Some of the best art classes are A Day In Art, La Pittura Studio, and Abrons Art Center | Henry Street Settlement, but if you want to see more about these and other classes, you can always visit Class Curious.