The crowning glory of the Scottish capital, Edinburgh Castle is popular not only because it is the symbolic heart of Scotland but also because of the views from its battlements: on a clear day the vistas—stretching to the "kingdom" of Fife—are breathtaking. There's so much to see that you need at least three hours to do the site justice.
The castle encompasses the chronicle of Scottish history. Archaeological investigations have established that the rock on which the castle stands was inhabited as far back as 1000 BC, in the latter part of the Bronze Age. There have been fortifications here since the mysterious people called the Picts first used it as a stronghold in the 3rd and 4th centuries AD. Anglian invaders from northern England dislodged the Picts in AD 452, and for the next 1,300 years the site saw countless battles and skirmishes. You'll hear the story of how Randolph, earl of Moray, nephew of freedom-fighter Robert the Bruce, scaled the heights one dark night in 1313, surprised the English guard, and recaptured the castle for the Scots. At the same time he destroyed every one of its buildings except for St. Margaret's Chapel, dating from around 1076, so that successive Stewart kings had to rebuild the castle bit by bit.
The castle has been held over time by Scots and Englishmen, Catholics and Protestants, soldiers and royalty. In the 16th century Mary, Queen of Scots, gave birth here to the future James VI of Scotland (1566-1625), who was also to rule England as James I. In 1573 it was the last fortress to support Mary's claim as the rightful Catholic queen of Britain, causing the castle to be virtually destroyed by English artillery fire.
You enter across the Esplanade, the huge forecourt built in the 18th century as a parade ground; it now serves as the castle parking lot. The area comes alive with color and music each August when it is used for the Military Tattoo, a festival of magnificently outfitted marching bands and regiments. Heading over the drawbridge and through the gatehouse, past the guards, you'll find the rough stone walls of the Half-Moon Battery, where the one-o'clock gun is fired every day in an impressively anachronistic ceremony; these curving ramparts give Edinburgh Castle its distinctive appearance from miles away. Climb up through a second gateway and you come to the oldest surviving building in the complex, the tiny 11th-century St. Margaret's Chapel, named in honor of Saxon queen Margaret (1046-93), who had persuaded her husband, King Malcolm III (circa 1031-93), to move his court from Dunfermline to Edinburgh. Edinburgh's environs—the Lothians—were occupied by Anglian settlers with whom the queen felt more at home, or so the story goes (Dunfermline was surrounded by Celts). The Crown Room, a must-see, contains the "Honours of Scotland"—the crown, scepter, and sword that once graced the Scottish monarch. Upon the Stone of Scone, also in the Crown Room, Scottish monarchs once sat to be crowned. In the section now called Queen Mary's Apartments, Mary, Queen of Scots, gave birth to James VI of Scotland. The Great Hall displays arms and armor under an impressive vaulted, beamed ceiling. Scottish parliament meetings were conducted here until 1840. During the Napoleonic Wars in the early 19th century, the castle held French prisoners of war, whose carvings can still be seen on the vaults under the Great Hall.
Military features of interest include the Scottish National War Memorial, the Scottish United Services Museum, and the famous 15th-century Belgian-made cannon Mons Meg. This enormous piece of artillery has been silent since 1682, when it exploded while firing a salute for the duke of York; it now stands in an ancient hall behind the Half-Moon Battery. Contrary to what you may hear from locals, it is not Mons Meg but the battery's time gun that goes off with a bang every weekday at 1 PM, frightening visitors and reminding Edinburghers to check their watches.
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