The cathedral in Bordeaux offers an occasional 9pm tour of the chapel and organ loft
https://www.weezevent.com/visite-nocturne-4
and today, July 25, is the anniversary of the wedding in 1137 between Eleanor of Aquitaine and the future King Louis VII, when he was still a prince and she was 13 years old. The archbishop of Bordeaux performed the wedding here, which was quite a complicated political arrangement among the contesting French and English nobility to consolidate control over western Europe. When that fell apart, her next marriage was to Henry II.
The cathedral has a lot going for it, although it's been re-done a few times since those days. It's on the pilgrimage route to Compostela, too. (Eleanor's dad actually died en-route on Good Friday of that previous spring)
Also interesting to note that Eleanor's first language was the Poitevin dialect of French, which is rarer today but still found in several parts of northern California, like Plumas and Siskiyou counties!
(This according to wikipedia...)