Thanks to Practically Magick for pointing out that the Illumination of New Grange that happens on the Solstice will be tommorrow.
A live webcast will be available free of charge from 8:30 to 9:30 GMT, which is actually only a few hours from now. You can also watch it here
If you have never been there, I highly recommend that you put it on your pilgimage list for this life. Sort of the feminine answer to Stonehenge in a way. The picture is me at New Grance circa 1993 wearing a really terrible sweater. On the winter solstice the sun shines directly into the sunbox which is over my head in the photo, and illuminates the chamber inside.