FYI - James J Hill built a replica of Stonehenge in the Columbia Gorge, on the Washington side of the river - orienting it with the landscape & the heavens for the same sort of astrological magic that happens at the British original. It's a WWII memorial, as well as a regular gathering place at solstices & equinoces
(is that really the plural form, or did I just make that up?). There's a decent view of it on the website, and this one doesn't warrant the delicacy with which the original is treated, so you can walk around in it all you want.
http://www.maryhillmuseum.org/about.htmGreat museum too - my favorite pieces are the war-era French fashion mannequins (when raw materials were scarce, a couple of the French fashion houses did their lines in 16" scale models rather than full-size dresses, with elaborate sets to boot) and an incredible collection of chess sets...
