Holyrood Abbey in Edinburgh, Scotland, was founded in 1128 by King David I. It started as a religious house but later became a royal residence. Over the centuries, it saw significant events like the Treaty of Edinburgh–Northampton and the coronation of Charles I. However, it fell into disrepair after the Scottish Reformation and eventually collapsed in 1768. Despite restoration proposals, it remains a roofless ruin today, attracting visitors and serving as inspiration for artists like Felix Mendelssohn.