21. Pennsylvania Avenue National Historic Site
900 Ohio Dr SW, Washington, DC 20024
Coordinate: 38.88134,-77.03294
Phone: (202) 606-9686
22. Old Stone House
3051 M St NW, Washington, DC 20007
Coordinate: 38.90538,-77.06038
Phone: (202) 426-6851
23. St John's Episcopal Preschool
3240 O St NW, Washington, DC 20007
Coordinate: 38.90751,-77.06495
Phone: (202) 338-1796
24. Audi Field
1711 1st St SW, Washington, DC 20024
Coordinate: 38.86871,-77.01262
Phone: (202) 587-5000
25. Thomas Jefferson Memorial
900 Ohio Dr SW, Washington, DC 20024
Coordinate: 38.88193,-77.03669
Phone: (202) 426-6841
26. DC Explorers LLC
PO Box 60251, Washington, DC 20039
Coordinate: 38.9528,-77.0234
Phone: (202) 829-2922
27. Frederick Douglass National Historic Site
1411 W St SE, Washington, DC 20020
Coordinate: 38.864063,-76.98522
Phone: (202) 426-5961
28. Washington Monument
900 Ohio Dr SW, Washington, DC 20024
Coordinate: 38.88138,-77.03289
Phone: (202) 426-6841
29. Tudor Place
1644 31st St NW, Washington, DC 20007
Coordinate: 38.91149,-77.06299
Phone: (202) 965-0400
30. George Mason Memorial
900 Ohio Dr SW, Washington, DC 20024
Coordinate: 38.88122,-77.03244
Phone: (202) 426-6841
31. Blind Whino
700 Delaware Ave SW, Washington, DC 20024
Coordinate: 38.88021,-77.01234
Phone: (202) 554-0103
32. Ulysses S Grant Memorial
1st Maryland Ave SW, Washington, DC 20024
Coordinate: 38.87594,-77.01603
Phone: (202) 426-6841
33. United States Capital Building
Washington, DC 20004
Phone: (202) 482-7200
34. United States Botanic Garden
100 Maryland Ave NE, Washington, DC 20002
Coordinate: 38.89144,-77.00562
Phone: (202) 225-8333
35. Wangari Garden
416 Kenyon St NW, Washington, DC 20010
Coordinate: 38.93038,-77.01838
Phone: (202) 670-5459
36. Friends Of The Us National Arboretum
3501 New York Ave NE, Washington, DC 20002
Coordinate: 38.91675,-76.95987
Phone: (202) 245-2726
37. DC UrbanGreens, Inc
3779 Ely Pl SE, Washington, DC 20019
Coordinate: 38.8829,-76.94876
Phone: (336) 549-8991
38. Rock Creek Park Nature Center
5200 Glover Rd NW, Washington, DC 20015
Coordinate: 38.95832,-77.05189
Phone: (202) 895-6070
39. Korean War Veterans Memorial
900 Ohio Dr SW, Washington, DC 20024
Coordinate: 38.88134,-77.03284
Phone: (202) 426-6841
40. Rock Creek Park Administive Office
3545 Williamsburg Ln NW, Washington, DC 20008
Coordinate: 38.9351,-77.052345
Phone: (202) 895-6000