MTU Blackrock Castle Observatory in Cork combines an award-winning science centre, Ireland in Space and astronomy exhibits, a self-guided 16th-century castle tour, and star shows. The operator homepage currently lists daily opening 10:00–20:00 with last entry at 19:00, but currently warns of a temporary Saturday/Sunday closure due to unforeseen circumstances and says it will reopen Monday at 10:00; verify the live schedule before travel. Walk-ins are welcome and admission includes the science centre and castle tour. Visitor address: Castle Road, Blackrock, Cork, T12 YW52, Ireland.