Apologies in advance if this has been mentioned before. I did a quick search and couldn't find anything on here.
This is a cairn shaped building in Co. Sligo, available for hire. The building is reported to be aligned to the dawns and dusks of both the summer and winter solstices when beam of light enter the middle of the central hall. The owner also says it lies at the junction of three ancient ley lines.
The central focus of Gyreum is a 16 meter diameter circular hall with a central sunken seating area surrounding the main fireplace. The main hall is a large open space described as "perfect for yoga, meditation, expositions, rehearsal space or as the main living area". Your Special Event might include something to do with "Archaeology Myth & Landscape.... Winter Astronomy seminars....or Solstice & Equinox Celebrations."