I have to start this by saying that my pictures do not do the beauty of the Dumbarton Oaks Gardens any justice. You will seriously feel like you were transported back into a magical time inside of a secret garden. This is easily one of my favorite places to visit in all of DC.
This is a location that is a bit tucked away in Georgetown. When I think of Georgetown I think of crowded sidewalks, the waterfront, shops, and restaurants. It's not in that part of Georgetown but off R St. NW. It's a beautiful walk from the main area as you get to pass by so many beautiful homes.
Admittedly, I didn't know much about the gardens until I found it on Museum Day a few years ago. I figured it was worth checking out and we go on Museum Day each year & it has become a place I almost always recommend to anyone visiting DC.
If you're interested in more pictures, Rachel has a post on the gardens her blog and her photography is amazing!
From March 15th to October 31st the admission is $8 or $5 for seniors, students, and children. From November 1st to March 14th the admission is free. It's open from 12-6pm daily (12-5pm during the winter season), and is closed on Mondays.