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  • Explore BCO's Universe

    Exciting interactive exhibits and activities await at BCO, from exploring space and alien lifeforms to the Castle's battlements, gunnery and rich maritime history.

    Exhibits & Tickets

  • Discover & Learn at BCO

    From school tours including castle visits as Gaeilge to workshops for all ages, a class trip to BCO educates and entertains through hands-on discovery.

    School Tours & Workshops

    Featured Exhibits

    Journeys of Exploration

    Housed in an iconic Cork landmark dating back to 1582, a visit to Blackrock Castle Observatory includes entry to Journeys of Exploration.

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    Cosmos at the Castle

    Learn about the Universe, extreme life forms on Earth and life in outer space!

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    Daily Schedule

    Plan your visit with an up to date list of the times of activities, tours and events at Blackrock Castle.

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    Upcoming Events

    Summer Primary Teacher CPD Courses

    5 days duration

    Monday 1st July 2019

    Details & Booking »

    Junior Space Camp

    Sunday 7th July 2019

    Details & Booking »

    Space Camp 2019

    5 days duration

    Monday 8th July 2019, Monday 22nd July

    Details & Booking »

    BCO News & Blog

    Name Your Own Exoplanet – Ireland

    June 6, 2019

    As part of the International Astronomical Union's 100 year Anniversary celebrations, Ireland will get to name an exoplanet!

    Sky Matters – June 2019

    May 30, 2019

    Sky Matters June 2019 - Sky Matters is a monthly newsletter about the night sky, published by CIT Blackrock Castle Observatory.

    Cork City Walls Art Project

    May 28, 2019

    BCO are thrilled to announce that work has been completed on this first of a set of murals commissioned under a successful application to Cork City Council's City Centre Placemaking Fund. The work was a collaboration between CIT Blackrock Castle Observatory, Cork City Council, The Walls Project, and artist Curtis Hylton.

    Space Week 2019 Launched!

    May 23, 2019 /

    Space Week 2019 launched by Minister John Halligan

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    © CIT Blackrock Castle Observatory T/A Cosmos Education Ltd.  Registered in Ireland: Company No. 451645. Registered Charity #CHY 18134. Registered Address: CIT Blackrock Castle Observatory, Castle Road, Blackrock, Cork, Ireland T12 YW52