Riis tried hard to have the slums around Five Points demolished and replaced with a park. His writings resulted in the Drexel Committee investigation of unsafe tenements; this resulted in the Small Park Act of 1887. Riis was not invited to the eventual opening of the park on June 15, 1897, but went all the same, together with Lincoln Steffens. In the last speech, the street cleaning commissioner credited Riis for the park and led the public in giving him three cheers of "Hooray, Jacob Riis!" Other parks also were created, and Riis was popularly credited with them as well.