Interesting article here in http://forward.com:
Portugal Plumbers Uncover 600-Year-Old Mikvah Complex
It appears that while doing some repair work on city drains, technicians in Coimbra, Portugal have stumbled upon some 700 year-old historic traditional Jewish baths.
It is reported that experts suggest that this may be a unique discovery in Portugal.
If verified by archaeologists and Jewish Historians, it certainly is going to enhance Coimbra's reputation as a destination for historic tourism in the wake of its being awarded world heritage status by UNESCO in August, 2013.
Article from Portuguese National Daily, "Publico" here: