Yeah, but if you're into stuff like "why was this so important to build that they had to invent ways to mine the stones, move them almost 50 miles, and figure out how to erect the things using maths that should've been foreign to them"... I find that stuff pretty interesting, like that mound in Ireland with a tiny hole that only lets a beam of light through on the solstices like in Indiana Jones. I think you could come up with some interesting conversations to have with the kids on why trade skills are important ;-)
Lots of other stone circles in England (not henges), and some closer than Stonehenge, but they're pretty boring, although if you've never seen an actual thatched roof house... kids might be interested in that kinda thing.
