About SHIZUAN
SHIZUAN is a free 3D map for people deciding where to stay or where to live in Tokyo. It turns scattered public statistics into one picture you can read for yourself.
Why we built it
Booking a hotel in Tokyo usually comes down to distance from the station, price and reviews. What is much harder to find is a plain, comparable view of the surroundings: how many incidents were reported to the police on the streets nearby, or whether the block turns into a nightlife strip after dark. That information exists, but it is spread across police spreadsheets, census files and city planning maps, all in Japanese and all at different levels of detail.
SHIZUAN joins those sources at the level of the chome, the small numbered blocks that make up Tokyo addresses. All 5,309 neighborhoods of mainland Tokyo are measured with the same yardstick, and every one of them is drawn as a column whose height and color you can compare at a glance.
The name comes from two Japanese words: shizuka (quiet) and anshin (peace of mind).
How we edit
- We do not judge places. The map shows how many incidents were reported relative to a baseline and an estimate of quietness. It never labels a neighborhood as good or bad.
- We do not rate hotels, shops or venues. Places to stay are counted, never named. We do not store or show names, addresses, prices or ratings of any business.
- No ordered lists of “most” or “fewest” incidents. When you filter areas, the result list is sorted by name.
- Every formula is public. Which offenses count, how they are weighted, what they are divided by and where the level boundaries fall is all written out on the Data & methods page.
- No individual cases. We only use aggregated public figures. There are no dates, locations or descriptions of specific events, and nothing about the people involved.
What this map cannot tell you
SHIZUAN compares statistics. It does not guarantee anyone's safety. Reported incidents are the cases known to the police, which is not the same as everything that happens, and not the same as how a street feels at night. The quietness score is an estimate built from zoning, roads and venues; it is not a noise measurement. Please use it alongside the actual location, the building itself and recent guest reviews.
Where the data comes from
Incident counts are the Tokyo Metropolitan Police Department's open data, summed over the last three full years (currently 2023–2025). Population and boundaries come from the 2020 national census, zoning from the Tokyo Metropolitan Government, transport from Japan's National Land Numerical Information, and places to stay and late-night venues from OpenStreetMap. We plan to refresh the numbers once a year, after the police publish final figures for the previous year.
Advertising
SHIZUAN is funded by ads served through Google AdSense. We do not place ad units inside the map, the legend or the neighborhood data cards, although Google's automatic ads may appear at the edges of the screen. Cookies used by ads are explained in our privacy policy. We do not currently carry affiliate links to booking sites; the “Find places to stay nearby on a map” button simply opens a Google Maps search around that spot.
Guides
- How to read the map
- Choosing an area to stay in Tokyo with data
- Checking a neighborhood before you move
- How the quietness estimate works, and its limits
- Frequently asked questions
Terms that apply to using the site are on the terms of use page.