This 1936 aerial view shows the Jantzen Beach Amusement Park on Hayden Island. The park opened in 1928 and at the time was the largest amusement park in the nation. The photo is oriented with southwest at the top. The natatorium is next to the part of the Interstate Bridge (then only one span wide) that crosses North Portland Harbor, while the roller coaster is clearly visible near the bottom. The park closed in 1970 and is now the site of Jantzen Beach shopping mall.