WALKSCAPE
Crosswave EditionWhy Odaiba Is Named for a Gun Battery
2026-03-02
How a Quiet Place Got a Name From a Time of Alarm
A Waterfront With an Unexpected Name
Odaiba (お台場・おだいば) is one of the easiest places in Tokyo to feel close to the water. You can see Rainbow Bridge from the promenade. At night the buildings and the Ferris wheel used to light up together, slowing the feel of the city for a little while. It’s a place where a walk can be the whole plan.
Daiba (台場) means a battery or a fortified site for artillery. People take pictures, look out at the bay and move between shopping complexes. The name preserves what this part of the shore was built to do.
When the Bay Needed Defending
The name goes back to the closing years of the Edo period. After Commodore Matthew Perry’s ships arrived in 1853, the shogunate built artificial islands with artillery positions to defend Edo. Those batteries were daiba. Odaiba adds the honorific o (御), associated here with the shogunate’s defenses.
The name outlasted its first purpose. Once you know that the shore was a place to watch for a fleet, the same view at night looks a little different.
A Name That Remembers a Job
A place name can be hard to keep in your head when it’s only a sound. In Odaiba, you can hear daiba, the word for a battery, and picture what stood here. When the station name comes up again, the picture comes with it.
Cities keep changing. Their names have a way of holding on to a past use. Part of what feels quiet at Odaiba today is a shore that no longer has to serve as a line of defense.
The Name in Two Parts
| Word | Reading | Meaning |
|---|---|---|
| 台場 | だいば | artillery battery or fortified gun emplacement |
| 御台場 | おだいば | place name from the batteries built to defend Edo |
The night view can bring back the word Odaiba. The name in turn gives you a way to remember daiba and what the site once held.
Examples in Context
- 台場(だいば)は海(うみ)を守(まも)るための施設(しせつ)だった。
- A daiba was a fortification built to defend the coast.
- 御台場(おだいば)から橋(はし)がよく見(み)える。
- You can see the bridge clearly from Odaiba.
- 昔(むかし)、ここに砲台(ほうだい)が置(お)かれていた。
- There used to be a gun battery here.
- 夜(よる)の御台場(おだいば)はとても静(しず)かだ。
- Odaiba is very quiet at night.
What to Remember on the Waterfront
The same shore that draws people out to look at the sea once held guns to defend the city from it. The next time you hear Odaiba, picture both uses of the bay.