Japan’s Fireproof Treasure Vaults

Traditional Japanese kura are thick-walled storehouses designed to be virtually indestructible. These buildings were engineered with heavy clay coatings to survive even the most intense city fires.

Built from timber and layered with heavy clay, a kura acts like a massive thermal shield for precious family heirlooms. Owners could seal the heavy doors with mud during a fire to keep the interior climate stable and cool. Because they were so durable and expensive to construct, they became status symbols for wealthy merchants. Today, many of these historical vaults have been converted into charming cafes or museums.