EDINBURGH -- Any stroll along the city's famed Royal Mile should continue into Holyrood Park and up Arthur's Seat, an extinct volcano . The highest of Edinburgh's seven hills, the 820-foot Arthur's Seat offers a wondrous panorama of the rugged highland country at its summit.
The volcano erupted some 350 million years ago, leaving layers of volcanic ash and towering bluffs. The 640-acre park is adjacent to the palace of the same name and was once the 12th-century hunting grounds of King David I. Terraces and furrows on the land as well as the ruins of St. Anthony's Chapel are evidence of life here in medieval times.