侍と城Samurai And Castles

For more than two and a half centuries, Japan was ruled from a city built to be a beautiful trap. The samurai world of lords and castles sounds remote, but its words are not: they are the everyday Japanese you'd still use to travel the country today. The roads those lords walked are the words for "road" and "journey" you still need now. Learning this vocabulary is two things at once: a window into the Edo period, and a set of travel words you'll actually use.

The Road to Edo#

The story starts with a journey. Under a system called 参勤交代, every feudal lord had to march to the capital and back, year after year. Some traveled a few days; the lord of Satsuma, at the far southwestern tip, needed well over a month on the 街道 — the great highway.

These processions followed five famous highways radiating out from Edo. A lord could measure the whole burden of his life in the 距離 between his castle and the capital, a route he and his retainers would 歩く on foot at roughly forty kilometers a day.

We have mapped all 260-odd of these journeys as a single picture — every domain in Japan, each tethered to Edo by the road it traveled twice a year. You can explore the map of the whole system here, and pick any lord to see how far his leash stretched.

North, South, and the Shape of the Country#

Travel vocabulary lives or dies on directions, and the four compass words are among the most useful in the entire language. The domains spread from the cold 北 of the main island down to the warm 南 of Kyushu.

The roads themselves were shaped by the land — winding around each 山 and following each 川 until a bridge or a ferry let them across.

Castles and the Men Who Held Them#

At the end of each road stood a 城. Today Japan's castles are among its most visited sights, and the word comes up constantly when you travel.

Inside those walls lived the warrior class. The English word "samurai" covers several Japanese terms: the romantic 侍, the broader 武士 for the whole warrior estate, and the polite 殿様 a retainer used for his lord.

The Machine of Control#

Above the lords sat the 将軍, the shogun, the real ruler of Japan. Beneath him, each 大名 governed his own 藩, ranked by its 石高 — the rice income that decided everything from a lord's prestige to the size of the army he owed.

The whole point of 参勤交代 was control. While a lord governed at home, his family stayed in Edo — not as guests, but as a 人質. To raise an army was to condemn your own wife and child.

From War to Peace#

It is easy to forget what the system replaced. The century before Edo was an age of 戦争 so constant it has its own name. What the lords' leashes bought was 平和 — more than 250 years of it, among the longest unbroken stretches of peace in the nation's 歴史.

That peace made Edo into what may have been the largest city on earth — and when the shogunate finally fell in 1868, the city kept its place but changed its name, becoming 東京, the eastern 首都. The travel you do in Japan today still ends, more often than not, in the city those lords were never allowed to leave.

See the whole system as data — all 260 domains, their wealth, and the roads they walked — on the companion map: The machine that bought 250 years of peace.

All Samurai & Castle Vocabulary#

FAQ#