1 April to 30 September daily 9.30am to 5.30pm, last entry 30 minutes before closing; closed 1 October to 31 March. No works or masonry notice on 20 October 2026. The castle stands on an open green by the road, so the exterior is seen in winter; a February 2026 visitor walked up to it but could not go inside.
A roofless tower house with internal stairs, reached across the grass; no facilities, toilets or access guide published, though reviewers note plenty of seating around the green.
Photo: Lochranza Castle on its grassy peninsula beside Loch Ranza under a clear sky, with the hills of north Arran behind. Matt McFadzean, CC BY-SA 2.0. Source: https://commons.wikimedia.org/wiki/File:Lochranza_Castle_-_geograph.org.uk_-_4705547.jpg. Licence: https://creativecommons.org/licenses/by-sa/2.0. Resized and cropped for display; derivatives retain the source licence.