Edo Castle in Tokyo, and what is left of it

Edo Castle is older than the city that grew around it. A castle has stood on this site since 1457, when the samurai Ota Dokan built one on the ground now called the Honmaru, Ninomaru and Sannomaru.¹ The Ministry of the Environment adds that it was built in a time of conflict and political upheaval.

Its position was not an accident. The natural moat at Chidorigafuchi played a role in the decision to build here.⁶

For most visitors the first castle is a small piece of the story. What you see today dates from the Tokugawa rebuilding, and the best way to read the grounds is as a layering of eras: a modest fort, then the largest fortress of the shogunate, then an imperial residence. That layering is why a short stroll can feel like crossing several centuries.

The tallest building of the castle did not last. The original tower was destroyed by fire in 1657.³ Its stone base, the Tenshudai, still stands in the East Gardens, and the tower it supported is said to have been 51 meters high, the tallest in the country.¹²

A second keep never followed. The Chiyoda City Tourism Association says the tower was not rebuilt because its style was considered outdated, and effort went to restoring the castle's land instead.²¹ The decision is a quiet piece of history: the shogunate chose to repair the city before it replaced a symbol. Visitors who expect a rebuilt white tower are often surprised, since nothing like it ever returned to the skyline.

In its place another building took on the role. The Fujimi-yagura came to serve as a substitute after the great fire of 1657.¹⁷ In 1882 a meteorological observatory was even set up on the keep base,²² a sign that the ruin had found a second life as a useful platform.

Sakuradamon has another claim on memory. In 1860 the feudal lord Ii Naosuke was assassinated at the gate by ronin samurai.⁴⁵ The event is known as the Sakuradamon Incident and is one of the stories a guide will tell you as you pass the stones.

A great earthquake also left a mark on the gate. Only the huge force of the Great Kanto Earthquake in 1923 shook some of the gate's stones loose, and repairs have since strengthened it.⁴⁶ The wall has held up through a lot.

Standing before the gate, you can read the defense in the layout: the gate turns an intruder at a right angle inside a walled square, where archers and soldiers above would have had a clear shot.⁴² That is the kind of detail that the empty lawns cannot show you without a name and a story, which is the strongest argument for walking with someone who knows the ground. Even on your own, pause at the corner and look up at the angle of the wall.

The easiest place to start is the East Gardens, which are free to enter. The keep base, the Fujimi-yagura, the guardhouses and a restoration miniature of the castle all sit within them.^20,52 Ote-mon is a 5-minute walk from Otemachi Station.⁵³

If you want the details explained, a guided walk helps. The Viator tour behind this site lasts 2 hours, takes a group of up to 15 and starts from $13, with its listing naming stone gates, remnants of castle walls and the keep foundation. A GetYourGuide private tour of the East Gardens and Edo Castle starts from $63 for a 2-hour private group tour; the listing does not say whether that is per person or per group.

Whatever you pick, keep the shape of the story in mind: a castle from 1457, a vast Tokugawa stronghold, a keep lost in 1657, and a palace on the same ground from 1868.^1,3,4 Each stone you pass belongs to one of those chapters, and the quiet lawns are the clearest sign of how much has vanished. Walking the line of the old walls makes the scale of the shogun's castle easier to picture than any plan.