Loading view. There were no results found. There were no results found. Mt. Gretna Playhouse Events Venues Mt. Gretna Playhouse 200 Pennsylvania Ave. Mt. Gretna, 17064 United States Get Directions 717-361-1508 gretnamusic.org 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