pièce de résistance
noun
[ ˌpjɛs də reɪˈzɪstɒ̃s ]
• (especially with reference to creative work) the most important or remarkable feature.
• "the pièce de résistance of the meal was flaming ice cream"
Similar:
masterpiece,
magnum opus,
masterwork,
tour de force,
showpiece,
prize,
gem,
jewel,
jewel in the crown,
speciality,
special,
claim to fame,
forte,
chef-d'œuvre,
Origin:
French, literally ‘piece (i.e. means) of resistance’.