Well Washington State (where I live), not to be outdone by that beautiful old thing on Salisbury Plain, we have our own Stonehenge on a hill overlooking the Columbia River! And I have a photo for you, river and all...
Built by one of the old-time railroad magnates, Sam Hill (1857-1931), as a memorial for the veterans of World War I. Supposed to be an exact copy, however I don't know if he was careful to get the orientation done properly, they did not realize then that Stonehenge was an observatory.
Do you know the saying in UK, "What in the Sam Hill?" Maybe that never got exported beyond America's West Coast, but it is a mild expletive in case you are too polite to REALLY curse.
And then, Queen Marie of Romania came to visit Sam Hill!
He used some of his money to build a beautiful mansion overlooking the Columbia, not far from Stonehenge, and then he changed his mind and did not live there after all -- donated it as a museum. So this mansion/museum has beautiful silver filigree that belonged to Queen Marie, and lots of mementoes.
The basement of that mansion is the first place I ever saw Rodin sculptures, and promptly fell in love with Rodin. (There were lots of them at the Palace of the Legion of Honor in San Francisco, too -- I used to visit frequently when I lived in SF 1967-69.)
Okay, here is your photo of Washington State's own Stonehenge...complete with our great river...