Mons Meg in Edinburgh Castle
Mons Meg is a mediaeval cannon located on the battlements of Edinburgh Castle above Princes Street. It was built in 1449 and give as a gift to King James II in 1454. It was employed in sieges until the middle of the 16th century, after which it was only fired on ceremonial occasions. It was on one such occasion in 1680 that the barrel burst, rendering Mons Meg unusable. The gun remained in Edinburgh Castle until 1754 when, along with other unused weapons in Scotland, it was taken to the Tower of London.
After campaigns for its return were made it was brought back to Scotland in 1829. Mons Meg has since been restored, and is now on display within Edinburgh castle.
Mons Meg has a calibre or barrel diameter of 20 inches (510 mm), making it one of the largest cannons in the world.
Photo by @tomcarpenter

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