Stonehenge Summer Solstice Sunrise, Wiltshire, England — At midsummer dawn the sun rises precisely over the Heel Stone and its first rays pierce the northeast entrance to illuminate the monument's center. This deliberate alignment demonstrates that Stonehenge was designed as an astronomical instrument as well as a ceremonial space, and the event still draws tens of thousands of modern visitors each year.
© Rodolfus Haranje, CC BY-SA 4.0, via Wikimedia Commons
