Castle Sween

PricingFreeFree for all visitors

Free entry for everyone

Entry

Free for everyone

Pricing details

Free entry for everyone; no membership card is needed.

ParkingParking not known

The Trust's page does not say how parking is charged.

Parking details

Historic Scotland says there is no parking for castle visitors within the caravan park and that the castle is a 20 to 30 minute walk downhill from the parking area, but publishes no charge or free statement, so the status is recorded as unknown. Visitors may not drive down through the holiday park; reviewers park at the top of its entrance road and walk down the hill and back up.

Driving pin: the visitor parking area at the top of the holiday park road, 471 m east-south-east of Historic Scotland's own pin on the castle. The castle is on the east shore of Loch Sween in Knapdale, off the B8025. Historic Scotland gives journey planners only.

About

Castle Sween stands on a low rocky ridge on the shore of Loch Sween in Knapdale, looking out to Jura, and is thought to be the oldest castle on the Scottish mainland that can be dated with any certainty. It was built in the 1100s, probably by Suibhne the Red, a chieftain of Irish descent and ancestor of the MacSweens, when Argyll lay outside the Kingdom of Scotland, and both castle and loch take his name. A curtain wall two metres thick and eight metres high, with broad buttresses and almost no windows, encloses a square courtyard. The MacSweens lost it by 1262, a seaward tower was added about 1300, and it passed to the Lords of the Isles and then the Campbells before Sir Alexander MacDonald destroyed it in 1647. Today it sits in the middle of a holiday park. There is no parking for visitors inside the park: leave the car at the top and walk 20 to 30 minutes downhill, and back up.

Check today’s timesSee all times

Castle SweenOpen all year; an unstaffed open site, no hours published

Opening times may change at short notice.

Historic Scotland: 'Castle Sween is free to visit and open year-round.' No hours, closures or notices on 20 October 2026; not on Historic Scotland's closures page.

The castle stands inside a private holiday park; the walk from the parking area is 20 to 30 minutes downhill and steep on the way back up, so strong footwear is recommended. A roofless ruin with no Historic Scotland toilets or facilities; the holiday park's restaurant and cafe are run by the park.

Photo: The ruined walls and tower of Castle Sween on a rocky ridge above the shore, with trees in front and Loch Sween to the right. sylvia duckworth, CC BY-SA 2.0. Source: https://commons.wikimedia.org/wiki/File:Castle_Sween_-_geograph.org.uk_-_4038554.jpg. Licence: https://creativecommons.org/licenses/by-sa/2.0. Resized and cropped for display; derivatives retain the source licence.