New York City may be one of the costliest U.S. cities. <br />But you don't really have to shell out big bucks to have fun when you visit for a summer vacation. <br />Outdoor concerts, some museums, Shakespeare performances, and botanical gardens are completely free!<br />Business Insider compiled a list of 21 free things to do in The Big Apple in Summer 18. They include: <br />-Hopping on the Staten Island Ferry to see the Statue of Liberty. <br />
