Rothesay Castle

Rothesay Castle on the Isle of Bute features one of Scotland's most distinctive architectural elements: a circular curtain wall likely dating from the 13th century, making it strikingly unique among British fortifications. Founded by Walter, 3rd High Steward and ancestor of the royal Stewart line, the castle was designed to counter Norwegian invasions, enduring sieges in both 1230 and 1263 before being fortified with four round towers. The castle served as a royal residence for Scottish kings Robert II and Robert III and maintains an impressive gatehouse originally restored in 1900 that now houses displays about its royal heritage. Placed in state care by Historic Environment Scotland in 1961, the castle welcomes daily visitors to explore its distinctive circular architecture, impressive wet moat, and compelling royal connections.