Jesuit's Crypt of Antique Novitiate
This underground temple (dating from the early 18th century) was only rediscovered in 1989, which makes ot particularly fascinating for me (it makes you wonder what you are walking over everyday on your way to work!).
I tried to visit it at 3.30 pm on my last day in Cordoba, only to find that it is only open from 9am to 2.30pm - so sadly I missed it.
I wish I had visited yesterday when I was waiting for the churches to open their doors.
Next time...........

Simply stunning architecture.
Zoomed in view of the miniature statues