"Treasure Chests Found
Many Hyrulian people saved family heirlooms and other treasures in chests handcrafted by skilled artisans. Historians found them in Hyrulian homes and mountain caves. Inside they discovered jewels, armor and arrows."
Treasure Chests appear often in the The Legend of Zelda series. They can contain items ranging from equipment to Rupees to enemies or keys. It is a well known fact that when Link opens said chest, exciting music sounds.