I have found this theory crafters map of the area that the TV show “The 100” is set in.
Now I have tried searching for the skyscraper that seems to be seat of power in the show. The building is round and quite tall. I have searched Washington DC and Annapolis but that is about it. I can't find it. Here is a picture of the building I'm talking about (sorry for not being able to find a better one)
here is a bit better picture of the top of the building and the background.