Stonehenge is a Neolithic and Bronze Age monument located near Amesbury in the English county of Wiltshire. Constructed between 2500 BC and 2000 BC, it is composed of earthworks surrounding a circular setting of large standing stones, known as megaliths. Archaeoastronomers claim that Stonehenge represents an "ancient observatory," with significant alignments for the sunrise on the solstice and equinox days. Photo credit: Solipsist |