Official

Among them
There is a description that "the installation of Canon guns in the southern corner of the late Tokugawa shogunate period."

There is also a Hamarikyu Garden in late Tokugawa shogunate.
As one of the Odaibas, he played a part in the defense.

The outer periphery of the garden has been built with stone walls since the Edo period.
Since the cannon is installed, it seems that a stone wall is needed as a new base at the top.

There is a trace that seems to be part of a new stone wall.
Unfortunately, you can't see it from inside the Hamarikyu Garden.

But...

(I'm sorry that it's a little difficult to see.)

This photo shows the southern corner of Hamarikyu Onshi Garden from a ship arriving at the pier of Waters Takeshiba.
The aim is just before and after arriving at Waters Takeshiba.

A white pole on the stone wall on the surface of the water? There are several rows, but on the other side, you can see another stone wall, which is low.
This seems to be a stone wall when a canon cannon was installed.
In summer, vegetation is overgrown and invisible at all, but you can see it at this time.

Regarding the use of ships
There are several ship operators departing and arriving at Waters Takeshiba, and you will choose according to your destination.
Please note that you will not be able to see this stone wall from the ship arriving at Hamarikyu Garden.
In addition, there are currently no flights that can be boarded from Hamarikyu Gardens.

For the purpose of looking at the stone wall, there are regular flights and you can get out on the upper deck.
"Tokyo Waterside Line" is recommended.

It's a bit cold, but now a lot of water birds will welcome you.
After preparing binoculars etc., I think you can enjoy it more when you board.

Yoshinobu Tokugawa, the fifteenth shogun of Tokugawa, returned to Edo during the battle of Fushimi Toba in late Tokugawa shogunate.
Landed from the Hamarikyu Onshi Garden (at that time it was called Hama Goden).
At that time, what kind of feeling did you see Canon guns etc.?
Looking back on that era, I think it's a great pleasure to look at the stone wall.

Hamarikyu Onshi Garden

Location
Hamarikyuteien, Chuo-ku, Tokyo

[Opening hours]
9:00 a.m. to 5:00 p.m.
(Admission is until 4:30 pm)