Solar halo over Santiago de Compostela

I'm currently with my family, who are here for a few days for my Father's birthday. Today we went to see the swinging of the botafumeiro in the Cathedral, about the least religious religious ceremony you're ever likely to encounter. Following this we had a spot to eat, and headed back to my flat, when I looked up and saw this:

A phenomenal solar halo! I've been wanting to get a glimpse of one of these for as long as I can remember and have never seen one with this intensity. The sky is pretty clear but presumably the ice crystals in the atmosphere which cause the 22 degree halo are currently plentiful enough that we get this stunning solar performance.

For lots more information about this and other effects I highly recommend going to the atmospheric optics website which has a wealth of pictures and discussion about this sort of amazing effect!