Historic Scotland

Opening times

Castle Sween is open year-round.



Explore one of Scotland’s oldest castles, stronghold of Suibhne ‘the Red’ and the MacDonald Lords of the Isles.

Castle Sween is thought to be the oldest castle on the Scottish mainland that we can date with any certainty. Architectural details show it was built in the 1100s and occupied for about 500 years.

The castle sits on a low ridge looking over Loch Sween and out to Jura. To its west is a small islet cleared to act as a boat landing, illustrating the vital importance of the sea as a major transport link.