I've had the chance to watch the solstice sun from a Chaco Great House and a sun dagger form during the spring equinox - inspiring interplays of humanity, landscape, building and art that are all the more wonderful for their rarity thru time.
I also enjoyed this years sunless solstice sunset. There was no hint of the sun on the horizon - the sun lit up shapes in the clouds, but there was no way to trace its path, see its last position before it changes direction, and by sunset there was only a faint grey light. What an interesting reminder of the everyday - some solstices a rock is just a rock and no one sees the grand vision - just another day.