The private Castle of Pambre is the best example of Galician Military architecture.  Looks like they've done some work as there is no longer vegetation growing from the towers. The castle has now been sold to the Spanish Government who have no funds for restoration, so the vegetation is growing again. The grounds of the castle are open to the public free of charge, but beware of the guard dog.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/72303220@N00">Alex Chang</a> from Bilbao, Spain
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/72303220@N00/219049413/">Camino de Santiago - August 2006</a>