For example, I've been doing a little searching, and I can't seem to find a book that explains the ancient marvel that is...
Foamhenge is exactly like Stonehenge, except it's in Virginia (not England). And it's made of styrofoam, not stone. And it was constructed by a guy named Mark Cline, not ancient druids.
Other than that, it's pretty much the same!
T-shirt from here,
Foamhenge from Atlas Obscura.