Edinburgh Castle has had many uses over the years. In the 18th and 19th centuries, Edinburgh Castle was a prison for sailors. Some incarcerated in the dungeons of Edinburgh Castle, who left graffitti on their prison walls, sailed with John Paul Jones, founder of the US Navy.
More than a million people a year visit Edinburgh Castle, thousands to attend the Edinburgh Military Tattoo, a colorful pageant of the Scottish regiments, complete with bagpipes, tartans and lots of horses, held every August.

