Loading view. There were no results found. There were no results found. The Ellipse Events Venues The Ellipse Washington, DC 20502 United States Get Directions (202) 796-2500 https://thenationaltree.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