The Enchanted Rose

The Enchanted Rose from Beauty and The Beast is proven to be in the Museum of Cultural History because its seen there in the Descendants: Wicked World season 2 episode, Steal Away.

Before Auradon
The Enchanted Rose is first introduced when The Enchantress disguised as a old beggar woman comes to Beast's castle as a offering in exgange for her to be let in for the night. Beast sneered at the gift and turned the woman away. When Beast is cursed to be a beast untill he finds true love The rose is revealed to be a enchanted rose that represents time passing every time a petal falls. If he does find true love, the spell would be broken after the last petal falls.

Later in the film Its found in the West Wing by Belle who almost touches it untill Beast finds her and freaks out. After Gaston stabs Beast in the back (before falling off a cliff) the last petal fell at the exact moment Belle says "I love you". The magic from the rose transformed Beast back into a human and he and Belle live tale as old as time.