With a few days to linger around the DC area we decided to visit the African American Museum of History and Culture located near the Washington Monument. Our campground was only a 1/2 hour Metro ride away from the Smithsonian stop on the Orange Line. It is amazing what you can see and do in DC while on your way to a museum!
We finally made it to the museum at around 1pm when the gates open for folks who do not have a pre-reserved viewing time. As with most other Smithsonian museums, 4 hours was not quite enough to see all there is to offer so we will have to return in the future. At least all the Smithsonian museums are free to enter so coming back is not a problem.