@matthiasott I havenât been in over 20 years but I quite adored the MusĂ©e dâOrsay. The art collection is wonderful and the building itself is lovely.
Musée d'Orsay
Musée pluridisciplinaire exposant la plus riche collection de tableaux impressionnistes et post impressionnistes au monde dans l'ancienne gare d'Orsay à Paris.
(www.musee-orsay.fr)
SacrĂ©-CĆur is also very lovely, and you get a great view of the city from the top of the hill.