A study in architectural resilience atop a 350-million-year-old volcanic plug. While the site’s history reaches back to the Iron Age, the oldest standing structure is St Margaret’s Chapel, dating to 1130. This view highlights the transition from 12th-century Romanesque beginnings to the Scottish Baronial fortifications added through the 16th century. The massive Half Moon Battery and the Royal Palace walls demonstrate how the castle evolved from a medieval stronghold into a royal residence, standing as a 900-year timeline of Scottish masonry.