How tolerant is Mrs OOK?
If you have not been there before I can thoroughly recommend a visit to the Musee de L'Armee at Esplanade des Invalides.
http://www.musee-armee.fr/en/english-version.html
They have some truly wonderful exhibits, and paintings by the triumvirate of great French military painters; De Neuville, Meissonier and Detaille.
Whilst there you can also visit Napoleon's Tomb.
If you have convinced Mrs OOK to visit the museum, then reward here with a memorable eating experience at L'Escargot 1903, at 18 Rue Charles Lorilleux, 92800 Puteaux.
https://www.lescargot1903.com/
The restraurant is Michelin starred, and deservedly so. I eat out a lot, but went here with some work colleagues and it was one of the best meals I've enjoyed. Not cheap, mind, but amazing food.