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Markree Castle — photo by SE Keenan
Photo: SE Keenan · CC BY-SA 4.0

Markree Castle

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About this place

Markree Castle is a castle located in Collooney, County Sligo, Ireland. It is the ancestral seat of the Cooper family, partially moated by the River Unshin. Today it is a small family-run hotel. In the 1830s the Observatory on the grounds of the Castle had the largest refracting telescope in the world. What today is known as the asteroid 9 Metis was discovered there in the 1840s by the Coopers' observatory staff.

Getting There & Parking

Markree Castle is located in County Sligo, roughly 138 km (2h drive) from Galway and 219 km (3h 15m) from Dublin. Nearby highlights within a short drive include Teeling Monument (2.8 km away).

Galway138 km
~2h drive
Limerick215 km
~3h 10m drive
Dublin219 km
~3h 15m drive
Markree Castle Wedding Venue Tour | Exclusive Castle Hire in Ireland (Sligo) 2026

Markree Castle Wedding Venue Tour | Exclusive Castle Hire in Ireland (Sligo) 2026

Ladybird Ever After

Markree Castle Co. Sligo Ireland Wild Atlantic Way Travelvlog 2023

Markree Castle Co. Sligo Ireland Wild Atlantic Way Travelvlog 2023

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Markree Castle Sligo

Markree Castle Sligo

Markree Castle

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