Chuo-ku Tourism Association correspondent blog

 Even though "the highest place" is not "land price" or "building height", it is about "elevation".

The terrain of Chuo-ku is flat without mountains and valleys, and it is relatively easy for cycling and walking around the town. Walking around Chiyoda-ku and Minato-ku, you can see that there are many slopes. You can realize that most of Chuo-ku was landfills.

In the first place, the place that became the standard for measuring altitudes across the country was the first place. It was a water mark in Chuo-ku. In the early Meiji era, tide level was observed to determine zero (A.P.), and based on this, the average sea level of Tokyo Bay (T.P. = 0m above sea level) was determined, and a "standard marker" was installed.

From this historical benchmark, the current Japanese benchmark (24.4140m) in the Kensei Memorial Park in front of National Diet Building was surveyed.

The remnants of the city's historic site, the remnants of the city's historic site, are well-known, but what can not be overlooked is the "first-class benchmark" Komushi "" (above photo) located slightly away from it. . It was relocated to its current location in 2006 (2006), and an explanation board was installed in February 2009 (2009). The altitude here is 3.24m.

By the way, What is the highest altitude in Chuo-ku?

According to the document ("Standard Base Survey Results Table", July 2008, Tokyo Civil Engineering Technology Center), 20 altitudes (Tokyo Bay average sea level (T.P.)) are listed in Chuo-ku. .

The high altitude point is 4.7619m at Nihonbashi Honishicho 3-chome. Next is Ginza 5-chome 4.7562m and Ginza 8-chome 3.8337m (lower photo = Ginza 8-chome standard base). After all, Ginza has a high "land price", but the "ground" seems to be high.

On the other hand, the altitude at the low point is 0.7360m. Therefore, the height difference of the altitude in the ward is about 4m, about the height of the first floor of the building.

As you follow the high altitude, it seems that you are along the ridgeline, which was called Edo Maejima from the ancient Hongo Plateau. It seems that the former Tokai route was also passed here, and was there a city that made use of the terrain?

■"History here in Chuo-ku" series
The 1st "I still have Reigishi Island" here>>
The 2nd "A bridge that remains at the intersection" here>>

Last time (1st time), I took up Rei Kishijima, a historical place name, but this time, I would like to introduce a bridge that no longer exists has become the intersection name.

Chuo-ku is still present It is the first water surface rate in the Tokyo metropolitan area and can be called the city of water. In the past, most districts were surrounded by Horiwari and rivers. Not to mention those who knew immediately after the war, there were watersides here and there until just before the Tokyo Olympics. There was a bridge, and people and cars were coming and going. After that, there are still several bridges that turned into the capital highway Michigami, but the bridges that were over the reclaimed river disappeared.

But it's a big deal!　The name of the bridge in history remains. Sukiya Bridge, Kaji Bridge, Gofuku Bridge, etc., which everyone knows, are important points of transportation and are the names of intersections.

So, where is the intersection with the name of the bridge that is now missing in the photo?

Of course, everything is installed. It is not a bridge over the expressway in Chuo-ku. It might be a good idea to examine the origins of these bridges.

（1） Horai Bridge ("Rai" is a different character in heterogeneous characters), (2) Kurakake Bridge, (3) Tsuchihashi, (4) Yuuraku Bridge 

＊By the way, do you know the traffic sign at the right end of Tsuchihashi?　　I miss the mark of Daihachi car for some reason in this era. What is the reason for being installed at this intersection? This sign says "light vehicles other than bicycles are closed." ＊All photos were taken in May 2009.