I visited Stonehenge back in 2006. It was one of the stops we made while on a 3-week bus tour of the British Isles. My first impression was that it was much smaller than I had expected. We also had to stay behind the rope line and follow the paved walk that went around it. Didn’t notice any hippies while there. I think they only show up in droves during the Solstice celebrations.
The last time I had the opportunity to go, the area was blocked from tourists due to hoof & mouth ( or foot in mouth, I dunno) disease. I haven’t had a chance to go back since. As someone else said...I want to see these places before they are destroyed.