The 1799 Lazaretto is located on the site of the 1st permanent European settlement in Pennsylvania. Its roles as a quarantine station sixth oldest in the world, 19th century river side resort, religious center, very early civilian 20th century seaplane aviation training center, Chandler Field was a WW 1 US Army Signal Corps base, and 20th century civilian seaplane base and marina arguably makes it one of the most unique Cultural Landscapes in the world.