Tiny Openings, Deadly Purpose

Himeji Castle is lined with loopholes shaped like circles, triangles, squares, and rectangles. Defenders used them to fire tanegashima guns or arrows without exposing themselves.

Himeji Castle: The Hidden Weapons in Its Walls

The Walls Could Strike Downward

Angled openings called stone drop windows let defenders drop stones or pour boiling oil on attackers below. White plaster also helped protect the castle because it resisted fire.

Himeji Castle: The Hidden Weapons in Its Walls