Moving clockwise to look southeast downriver at the Potomac. A park ranger told me that the Potomac here is salty from the backflush of the Chesapeake Bay but it seems unwise to give it the taste test. The big grey building next to the river is the Bureau of Engraving & Printing, the money factory, where they print all those twenty dollar bills of which I am so fond. You can buy uncut sheets of ones there. The dark red building on the near side of it is the Holocaust Museum. They have piles of shoes and suitcases on display which the Nazis harvested from Jews headed for the gas chambers.