Edo Castle

Brief Information

Edo Castle today is easier to read not as a single surviving palace, but as the vast outline of a former fortress: its stone walls, moats, gates, individual buildings, the foundation of the main keep, and the Fujimi watchtower have survived. The site began as a fortification at the intersection of rivers near Tokyo Bay, and after Tokugawa Ieyasu rebuilt it, it became the main citadel of the Edo shogunate and the residence of the Tokugawa shoguns.

The most dramatic turn in the site's history is visible in its present division. Since 1869, the Tokyo Imperial Palace has stood here; part of the grounds became a castle park, while the Nippon Budokan and the National Archives of Japan were placed in the North Enclosure. The military fortress did not disappear completely: its former logic remains in the moats, walls, and fragments of fortifications.

What to Notice First

It is worth comparing the foundation of the tenshu, the moats, and the surviving gates. The main keep was five stories high and was considered the tallest castle keep in Japan after the destruction of Azuchi Castle, but now it is precisely the foundation that is identified by its name. This contrast changes the scale of the visit: the center of power here is read not through a tower, but through the empty space where it once stood.

The broad moats matter not as decorative water, but as boundaries between parts of the castle. Honmaru, the central fortress with the shoguns' palace, was separated from the rest of the complex by moats and surrounded by a wall with gates, towers, and barracks. Ninomaru, Sannomaru, and Nishinomaru also functioned as separate fortified sections. Therefore, the surviving walls, gates, and the Fujimi watchtower are best perceived together: they show the castle as a system of independent defensive zones, not as a single building.