An old Romanesque basilica in the heart of the French town of Clermont Ferrand. *edit from original post* We are unsure of why the term “port” came to be used and there are many theories surrounding this. It was built in the 12th century.
The east end of the basilica is quite striking.
There is a small belvedere in the next building that one can climb to get a better view of the lava stone roof of the basilica.
The symmetrical geometrical shapes, and coloured stones make it quite a pleasure to behold.
Do not miss this if you are near Clermont Ferrand.