United Kingdom Medieval Built: from 12th century Standing

Edinburgh Castle

Edinburgh Castle is a historic fortress perched atop Castle Rock, a volcanic plug rising 130 metres above the surrounding city, which has been a site of human occupation since at least the Iron Age. The earliest surviving structure, St Margaret's Chapel, dates from the early 12th century and is the oldest building in Edinburgh. Over the centuries the castle evolved from a royal residence into a formidable military stronghold, featuring layers of fortification added across the medieval, early modern, and modern periods. Today it houses the Honours of Scotland — the oldest crown jewels in the British Isles — as well as the Stone of Destiny and the famous 15th-century siege cannon, Mons Meg.

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Edinburgh Castle

United Kingdom

Longitude: -3.2001

Latitude: 55.9486

Historical Significance

Edinburgh Castle has played a central role in almost every major episode of Scottish history, serving as a royal palace, military garrison, state prison, and national treasury. It was the birthplace of King James VI of Scotland (later James I of England) in 1566 and the stronghold fought over in countless sieges that shaped the struggle for Scottish independence. As Scotland's most visited paid tourist attraction and a defining feature of the Edinburgh skyline, it remains an enduring symbol of Scottish national identity and resilience.

Facts

Fact 1

The Longest Siege in Scottish History

During the Lang Siege of 1571–1573, a garrison loyal to Mary Queen of Scots held the castle for nearly two years against Protestant forces, ending only when English artillery arrived and demolished the castle's Constable's Tower.

Fact 2

Mons Meg's Extraordinary Calibre

Mons Meg, the medieval bombard gifted to King James II in 1457, has a barrel diameter of 50 centimetres and could fire a 150-kilogram stone or iron ball over two miles, making it one of the largest cannons of the medieval world.

Fact 3

The One O'Clock Gun

Every day at precisely 1:00 PM (except Sundays, Good Friday, and Christmas Day), a 105mm artillery gun is fired from the castle's Mills Mount Battery — a tradition begun in 1861 to allow ships in the Firth of Forth to set their chronometers accurately.

Fact 4

The Stone of Destiny's Travels

The Stone of Destiny, on which Scottish kings were traditionally crowned, was seized by Edward I of England in 1296 and kept under the Coronation Chair in Westminster Abbey for 700 years before being returned to Scotland in 1996.

Fact 5

A Volcanic Foundation

Castle Rock is the remnant of a volcano that was active around 350 million years ago; the hard basalt plug resisted glacial erosion during the last Ice Age, leaving a steep crag-and-tail formation that makes the castle naturally almost impregnable from three sides.

Fact 6

Birthplace of a Dual Kingdom

James VI was born in a tiny room in the castle's Royal Palace on 19 June 1566 to Mary Queen of Scots; he would go on to unite the Scottish and English crowns in 1603, becoming the first monarch of both kingdoms simultaneously.

See Also