Osaka Castle is one of Japan's largest, covering over 100ha. The 30m stone walls and 90m moat are impressive. Why was such a huge castle needed? Learn about the powerful daimyo who moved history.

WAKAYAMA—A rare event to explore the underwater world of Wakayama Castle’s moat took place here on Oct. 5 as volunteers and city officials lowered the water level, revealing a hidden ecosystem.

Since the 5th century, Osaka has been one of Japan’s thriving ... From here, you’ll look out over the garden moats, castle walls, and vast cityscape. Over 106 hectares of gardens and green ...

HIROSAKI, Aomori -- Snow-covered cherry blossom trees and a castle moat in this northern Japan city are currently lit up in pink in the evenings, to the delight of visitors. The "Fuyu ni Saku ...