Wakayama Castle — Tiger's Den Fortress & Ninja House

Wakayama Castle (和歌山城) is a hilltop fortress built in 1585 by Toyotomi Hideyoshi's brother, later ruled by the powerful Tokugawa Kishu clan (one of three main Tokugawa branches eligible to produce shoguns). The castle's nickname 'Tora-gajō' (虎が城, Tiger Castle) reflects the Kishu clan's tiger crest. The current main keep (tenshu) is a 1958 concrete reconstruction after WWII bombing, but the stone ramparts, gates, and moats are original, and the castle grounds preserve Edo-period defensive architecture.

The castle interior houses a museum displaying samurai armor, swords, and historical documents of the Kishu domain. The top floor observation deck offers panoramic views over Wakayama City and the Kii Channel. The castle grounds include Nishinomaru Garden (西之丸庭園) — a traditional Japanese landscape garden with tea house, seasonal flowers, and koi ponds. A unique feature is the Ohashi Roka (御橋廊下) — a wooden corridor bridge with a sloped roof connecting two castle precincts, designed for protected samurai passage. The Ninja House (Wakayama Rekihaku Museum) near the castle recreates Edo-period townscape with trick rooms, hidden passages, and interactive ninja demonstrations, appealing especially to families. The castle is illuminated after dark, creating dramatic nightscapes against Wakayama's modern skyline.