It's the
Iglesia del Santo Sepulcro in Torres del Rio. The ruins of the
Hospice of San Juan de Acre are just before Navarrete
. I liked it that you put a spoiler alert on your links,
@jungleboy. When one has already seen detailed photos of these monuments and sites on the screen numerous time beforehand, a lot of the joy of discovery and the joy of seeing with one's own eyes for the first time is taken away from the experience.
To anyone who is into that kind of thing, I'd recommend the excellent guidebook by Gitliz and Davidson.
Brierley is pretty useless for this kind of information, and so are many of the other popular
Camino Frances guidebooks. They will of course list major sites like San Martín in Fromista and Eunate but provide little information or little accurate information. Gitliz/Davidson exists in electronic form, with a wealth of information, and the more important stuff is marked in bold. Recommended.
It always amuses me a little when posters say that they were "playing tourist" for a while or refer to themselves as also being "cultural tourists". I understand that people frame their camino walking quite differently from each other and that's ok for me, they don't have to stare at old stones as far as I am concerned.
@jungleboy mentioned the ruins just before Navarrete and called it a great place for reflection. I, too, walked down to the small complex and sat there for a while and tried to figure out, with the help of G/D and the info on site, what it looked like when it was whole, who lived there, who travelled through there, the passing of time and the changes it brings, lots of things to reflect upon. It's often small places like this where you have a chance to connect to what this Pilgrimage Road once was and why it is still there.
Sorry for writing a long comment instead of posting a succinct list of my favourites,
@Richard DeMerchant. What I'm trying to say is this: there are no "Must Sees" on the Way to Santiago. Don't make a list to tick off the "important sites" or the "hidden treasures". Leave room for making your own discoveries from one day to the next. I can tell you from my own experience that you can't see and experience everything you would have wanted to see and experience anyway. Buen camino!