Home > Hartley Nature Center 0 events found. There were no results found. There were no results found. Hartley Nature Center Events Venues Hartley Nature Center 3001 Woodland Ave Duluth, 55803 United States Get Directions Events at this venue Today Upcoming Upcoming Select date. Previous Events Today Next Events Subscribe to calendar Google Calendar iCalendar Outlook 365 Outlook Live Export .ics file Export Outlook .ics file