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Threave Castle

Castle Douglas, Dumfries
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Watch a forbidding island fortress come into view as you cross the River Dee by boat. Built by Archibald 'the Grim' in 1369 as a stronghold for the Black Douglases, the massive tower house stands 30m tall.

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For 21 years the castle was the seat of the powerful Margaret, Lady of Galloway. It is now an ideal spot for exploring, picnicking and, perhaps, painting. The island is rich with wild flowers in summer; you might also see ospreys and otters hunting in the river. Enjoy the short boat trip across the River Dee to reach the island fortress

Stand in awe of the huge tower house – it’s the same height as a modern 10-storey block, of flats or get up close to the artillery fortification that kept James II’s forces at bay - an innovative defence years ahead of its time. 

Tall view of Threave Castle beside river with green grass and blue sky with clouds.
Close-up of Threave Castle tower with stone walls under bright blue sky.
Threave Castle seen through bare trees with river and cloudy sky in background.

There is currently no access to the castle while we carry out conservation work, but visitors can still enjoy the island and the surrounding area. 

While the castle is closed, you can also explore river walks and the National Trust for Scotland's Threave Garden & Nature Reserve.

Ready for an adventure?

Use a Membership or Explorer Pass to discover centuries of Scottish history and heritage, all while saving money and supporting our work.

Membership

Ideal for regular visitors and heritage supporters

Unlimited annual pass for all ticketed sites plus daytime events

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  • Unlimited annual pass for all ticketed sites plus daytime events
  • Discount in our shops and cafés (on site and online)
  • Historic Scotland magazine delivered to your door
  • Free or discounted entry to sites in England, Wales and the Isle of Man
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Explorer Pass

Perfect for short-term trips and sightseeing

Valid for 14 consecutive days

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  • Valid for 14 consecutive days
  • Entry to all ticketed sites, including Edinburgh Castle, Stirling Castle and Urquhart Castle
  • 20% discount on audio guides at Edinburgh Castle, Stirling Castle and Glasgow Cathedral
  • Guaranteed entry when you pre-book online
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