Who has the largest unicorn collection?

I'm curious, who exactly holds the title of having the largest unicorn collection in the world? Is it a private collector, a museum, or perhaps an institution of some sort? And what makes their collection so notable, in terms of size, rarity, or historical significance? It's intriguing to think about the passion and dedication that must go into amassing such a collection, and I'm eager to learn more about the individual or organization behind it.