[IMGCAP(1)]If you commute to Capitol Hill from Northwest D.C., you might pass this construction site regularly. But do you remember where it is? And do you know which building is under renovation? One hint on the location: You’d pass it before you get to Union Station. Check back next week for the answer. [IMGCAP(2)] You’d have a better chance of passing by the American flag/Constitution combo from last time when you’re actually at work. It’s in the basement of the Capitol.