BCO will be closed to the public on Thurs May 15th, Tues May 20th, Wed May 21st and Sunday May 26th for private functions. We apologise for the inconvenience and look forward to welcoming you to BCO in the future. 
Journey Through Time
and Space
A 16th Century Castle
Home To a Science Centre and Observatory
Ireland in
Space
From Newgrange to New Space –
Explore Ireland’s Place in Space
Alien
Worlds
Travel to worlds beyond our solar system
Visiting Exhibition: January 2024 – April 2024
Your story began 13.8 billion years ago - Lets explore it together
Open Monday to Sunday 10:00 - 20:00
Last entry: 19:00
We are thrilled to welcome you to MTU Blackrock Castle Observatory where your admission includes access to MTU Blackrock Castle Observatory’s award winning science centre, a tour of the 16th century castle, and more.
Your Visit
What to Expect
Ireland in Space
From Newgrange to New Space – Ireland’s connection to Space may be deeper than you think…
Upcoming Events
We host regular events here at the Observatory so check your calendar against these exciting upcoming events!
Education at BCO
Venue Hire
Plan your event here
We are the perfect venue for those who want spectacle without sacrificing on functionality. Our facility is built to be highly customisable so we’re sure we can help you find the perfect setup for your event. Enquire today.
Corporate Events
Looking to treat your team or perhaps you want to impress a prospective client? Look no further.
Learn More
Weddings
Add a touch of magic to your dream day with a ceremony at our 16th Century Castle
Learn more
Photography
The Castle makes for a stunning subject but its towers and rooves also offer a unique vantage point for photographers
Learn More
