A tower-block neighborhood with so many children that a new school split off, and a waterfront park that now has a beach
The closest neighborhoods in the same city.
Ariake Garden combines housing and a shopping mall into one, and the tower City Towers Tokyo Bay has 1,539 units in total. Because the number of students at Ariake Elementary School increased, in 2018 Itchome split off Koto City's first nine-year integrated school, Ariake Nishi Gakuen. A weekend destination sits right within the neighborhood: Itchome's Ariake Shinsui Kaihin Park, where even the beach has been open since April 2026.
In May 2024, Ariake Nishi Gakuen had 1,294 students in grades 1 through 6 alone. The 1F of the mall has an AEON Style supermarket and a clinic zone covering 7 specialties.
In 2020, 96% of households in this neighborhood lived in buildings of 11 floors or higher, and 85% owned their own home. Children under 15 made up over 20%, while those 65 and older were only 5%, both quite different from Koto City as a whole.
From our street photos, cleanliness ranks 1st among 395 neighborhoods in Tokyo, buildings rank 1st, and sidewalks rank 3rd.
Nichome's Ariake Tennis Forest Park has free admission, with 49 courts. Ariake Garden's 5F and 6F have hot spring bathing facilities, with amber-colored water, and both the men's and women's baths have open-air baths.
This neighborhood isn't all residential—there are also large venues and a 16-hectare tennis park, so in 2020 only about 94 people lived per hectare. At the time of that census, Nichome's City Towers Tokyo Bay had only started move-ins at the end of February, so this figure can only be taken as a lower bound.
Daily shopping ranks 359th among 395 neighborhoods in Tokyo, healthcare ranks 362nd, and public transit ranks 249th. Kokusai-tenjijo Station, on the southern edge of the neighborhood, gets extremely crowded during large events at Big Sight.
This land has been reclaimed since 1931. In the early 1960s, part of Reclaimed Land No. 10 was named Fukagawa Ariake-cho, where Ariake refers to the moon still hanging in the sky at dawn.
Until the 1980s it was mainly industrial land, and at one point there was even the Shinonome Golf Course. In 1983, the former golf course site became Ariake Tennis Forest Park.
The Rinkai Subway Line is a line still under consideration. A 2023 review listed Tokyo Station to Ariake/Tokyo Big Sight Station (tentative name) as a goal to be realized by 2040. A 2022 plan proposed 5 intermediate stations (tentative names) including Shin-Ginza, Harumi, and Toyosu Shijo, which may change later.
Compared with the 395 Tokyo neighborhoods in this guide (scores 0–10)
Hospitals with inpatient beds (2020 data), public elementary and junior high schools whose catchment covers this area, high schools and universities within 1 km, stations, parks of 1 ha or more, and large shopping malls and department stores. Many Tokyo junior high students attend private schools, so junior high catchments are only a guide.
Maps show the shops and the sights. What a street is like, you only know by walking it. TidyMap uses AI street imagery analysis and public facility data to turn each area's street environment and everyday convenience into something you can compare. Search an address and look at the street outside first.
How to read it: yellow = poor, blue = good; grey = not enough data
TidyMap rates the street environment and everyday convenience. It does not assess the home itself, safety, noise or actual living experience. Street environment scores use AI assessments of imagery; convenience scores use public facility data.
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