Puzzle of two Byzantine monuments

Descending from our stroll through Le Panier we encountered this basilica near the seashore. Inside and out it is awesome, so we were surprised to find it dates from the second half of the nineteenth century, and , so some Wikipedia research shows , does the grand basilica on the highest point of the city with its huge golden statue. Such costly constructions are at odds with what we currently understand of the constitutional turmoil of that half century of the French nation, including the humiliating defeat at the hands of Prussia. Was the south in some way immune from a lot of this and was this town particularly publicly pious? These gaps in knowledge must await opportunity to research at home. What is striking is that the wiki source above is just not particularly interested- the entries on both basilicas are almost thumbnails. We however were struck by the three magnificent sets of horizontal organ pipes-what a blast they might deliver!