All you veterans make sure you have your DD214 available to your family if you want to be buried in a military cemetery with military honors. I keep a scanned copy on my phone.
I was fortunate enough to be taken to DC by my parents before my father died. About 1980 or so.....we toured FBI headquarters, Smithsonian, and the White House.
As a 10 year old kid.......nothing made a bigger impression on me than Arlington National Cemetery and watching the changing of the guard at The Tomb of the Unknown Soldier.