Thinking history through space and terrain

WHY
HERE?

Events cannot be told apart from their places
Listen to the voices of those who lived there

Flagship Gateways
Navigate by Terrain
Scroll to Explore
Jun 23, 2026Create GBM wins the Gakujoken Award at the Learning Digital Teaching Materials Contest
EXPLORING JAPAN
Interactive map · Live

StartInquiry

Start Inquiry

Don't just 'look' at maps - experience the choices our ancestors made through terrain conditions.

47 PREFECTURESPLACES + PHENOMENA + EXPERIMENTSOPEN SOURCE DATA
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Phenomena, themes & experiments

MODES OPEN
Reading + Mission · Live

How toAsk?

Modes of Inquiry

The art of nurturing 'Why?'

Learn how to transform vague questions into researchable ones.

  1. 01
    CULTIVATE

    Evolve questions: v1 → v2 → v3

  2. 02
    4 LENSES

    Four lenses: When, Where, Who, Really?

  3. 03
    PRACTICE

    Practice with guided missions

4 LENSESGUIDED MISSIONAGES 13 → RESEARCHER
question_evolution.md
LIVE
Mission Preview
v1
RAW

Why were there so many fires in Edo?

v2
REFINED

Why were wooden houses standard for Edo townspeople?

v3
VERIFIED
→ Evolved into a verifiable question!

Which spread fires more: dense housing or wind?

MISSION GUIDE
Guided Mission
Guided
EDITOR LIVE
v1.0 — Browser native

How toCreate?

Create GBM

Sculpt, paint and shape terrain — right in your browser.

Your land becomes something you can hold, study, and tell stories with.

BROWSER NATIVEAGES 13 → RESEARCHER5 EXPORT FORMATS
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Flagship Tool
3D White Map Editor
FLAGSHIP TOOL
Browser-native · Free

3D White Map Editor

Create and export 3D terrain models in your browser. Draw maps, overlay layers, preview in 3D, and output for education and presentation.

Browser-nativeOSM waterway overlay3MF / GLB / STL / OBJ / PNG export
Tutorial videos
01
Viewing terrain in 3D
02
How to use the editorComing soon
Launch Editor
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