Blackwater Castle Is Open. Dear friends of Blackwater Castle, we are delighted to share with you that the Castle will be open for any event again from the first day of January 2024. Inquiries for booking are welcome from now on. The team of Blackwater Castle is happy to continue providing the same high quality of hospitality and experience the Castle is so well known for. We are looking forward to welcoming you soon again. Patrick Nordstrom, Managing Director