Stonehenge

Bluestones hauled 150 miles — or, the old stories say, sung into place.

The bluestones were transported ~150 miles from Wales' Preseli Hills c. 3000 BCE — confirmed by geology; the method is unrecorded. The site encodes solstice alignments and sits in Britain's densest concentration of neolithic monuments. Legend (Geoffrey of Monmouth) says Merlin moved the stones by art. Connects to ley lines (Watkins' alignments run through it) and the druids (later Iron Age custodians, not builders).