MADISON SQUARE PARK, between Fifth and Madison Avenues, from 23rd to 26th Streets. Friday, noon to 6 p.m., “Let’s Talk the Many Seasons of Colorado,” a free event to illustrate the sports, arts and foods of the state with live music and dance, a climbing wall, a ski simulator, lasso twirling and other activities; co-sponsored by the Colorado Tourism Office and other Colorado businesses. Through April 27, daily, 11 a.m. to 5 p.m., “Online Newspapers: New York Edition,” an outdoor art installation by Olia Lialina and Dragan Espenschied that features digitized front pages from The New York Times, The Wall Street Journal, The New York Post and The Daily News. Saturday at 1 p.m., “Madison Square Art: Past and Present,” a tour that covers the history of art in the park with a look at the “Online” installation, meeting at the fountain plaza, at the south end of the park at Fifth Avenue and 23rd Street. Sponsored by the Madison Square Park Conservancy. madisonsquarepark.org. Free.