蔵 traditional storehouse

ZORRO keeps all his masks in a giant traditional storehouse.

Any room can become a traditional storehouse if you have your vassals store flowers in it (says Feudalisic M. Stewart AKA Domestic Daimyo)

the fuckin' fridge ★★★★☆
冷 (cold thing) + 蔵 (traditional storehouse) + 庫 (warehouse) = 冷蔵庫 (the fuckin' fridge )

built-in ☆☆☆☆☆
内 (the inside) + 蔵 (traditional storehouse) = 内蔵 (built-in)

built-in (don't confuse this with 内臓 which means internal organ)