Newgrange is an ancient structure in Ireland so constructed that the sun, at the exact time of the winter solstice, shines directly down a long corridor and illuminates the inner chamber. More about Newgrange here and here.
Grim has an Arthurian passage about the Solstice.
Don Sensing has thoughts astronomical, historical, and theological about the Star of Bethlehem.
Vienna Boys Choir, from Maggie’s Farm
Snowflakes and snow crystals, from Cal Tech. Lots of great photos
In the bleak midwinter, from King’s College Cambridge
The first radio broadcast of voice and music took place on Christmas Eve, 1906. (although there is debate about the historical veracity of this story)
An air traffic control version of The Night Before Christmas.