
Derg Castle
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Derg Castle is a local business in Castlederg, Co. Tyrone, listed under Historical Landmark on LocallyIrish.ie.
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About
Derg Castle, a historical landmark in Castlederg, Co. Tyrone, comprises the ruins of a Plantation era fortified house and bawn. Archaeological findings indicate an earlier 15th-century O'Neill tower house. The site features a rectangular bawn with corner flankers, some designed for artillery. The ruins are accessible and signposted from Castlederg Main Street, with free entry and onsite interpretation.
Opening Hours
Common questions about Derg Castle
What are Derg Castle's opening hours?
Derg Castle is open Monday open 24 hours; Tuesday open 24 hours; Wednesday open 24 hours; Thursday open 24 hours; Friday open 24 hours; Saturday open 24 hours; Sunday open 24 hours. Hours can change on bank holidays — check this page for any special hours.
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Questions & Answers
Q: Where is Derg Castle located?
A: Derg Castle is located in Castlederg, Co. Tyrone, and is accessible and signposted from Castlederg Main Street.
Q: What can visitors see at Derg Castle?
A: Visitors can see the ruins of a Plantation era fortified house and bawn, with corner flankers, some designed for artillery.
Q: Is there an earlier structure on the site?
A: Yes, archaeological findings indicate an earlier 15th-century O'Neill tower house on the site.
Q: Is there an entry fee to visit Derg Castle?
A: No, entry to Derg Castle is free, and onsite interpretation is available.
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At a Glance
- Category
- Historical Landmark
- Location
- Castlederg, Tyrone
- Status
- Open Now
- Listing updated
- 2 Nov 2026
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