Explore History Culture Heritage and Medieval. A chance to see Royal Windsor Castle, Windsor Castle, the largest and oldest occupied castle in the world, is the home of Her Majesty Queen Elizabeth II. Stonehenge,Visit mystic Stonehenge. Woodhenge,Dating from about 2300 BC, markers now replace rings of timber posts, which once possibly supported a ring-shaped building. Stonehenge in Avebury Few have looked at Avebury and Stonehenge, pondering whether they might be part of a larger complex. But when that question is asked, an altogether different one bubbles to the surface: could this complex also be linked with Plato’s fabled lost civilisation of Atlantisand Old Sarum, Climb the mighty ramparts for views over the Wiltshire plains and imagine the once thriving town of Old Sarum. Stand in the footprint of Salisbury's original cathedral, conquer the royal castle which stood high on the motte, and discover the awe-inspiring Iron Age hill fort where it all began.