an Aladdin's cave
A place full of treasures. (In The Arabian Nights, Aladdin finds a magic lamp in a cave.) I know you think your garage is full of junk, but to an antiques collector like me, it's an Aladdin's cave!
an Aladdin's cave
a place full of valuable objects.an Aladdin’s ˈcave
a place full of valuable or interesting objects: He kept for his private pleasure an Aladdin’s cave of stolen masterpieces.This expression comes from a story in The Arabian Nights. Aladdin was trapped in a cave full of gold and jewels by a magician.