Travel down to the Brittany region of France, just three hours west of Paris, and you will have a chance to see on the most unique structures in the country: the Cathedral of Nantes, now some five centuries old from the time it was commissioned. With an interior vaulting higher the Notre Dame, and stained glass windows over a marble-white interior, it makes makes for an impressive sight — as is proper for a Church dedicated to the saints Peter and Paul.

On this day, April 14, in 1434 the foundation stone of the Cathedral was laid down, marking the start of the construction. The rest of the church would be built up, very slowly, over the centuries.

The main structures went up in the 1400s, but by the time work got to decorating the interior style had changed away from the medieval. Finishing touches on the transept of the church were put in as late as the 1800s, making it simultaneously one of the oldest (going back to the laying of the foundational stone) and quite modern (slightly more than a century after the end of construction and about the same age as the Eiffel Tower.)