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STRIPED DONKEYWe do the heavy lifting.

City Twins

Two cities.
Connected through time.

Explore Nairobi and Lagos. Browse domains and follow a synthetic life.

Engraved Nairobi skyline

Kenya · East Africa

Nairobi

Connected synthetic people, households and city systems.

Synthetic citizen records
5,083,540
Population-series span
1940–2026
Public sample catalogue
20 domains
Administrative units
17 sub-counties
Explore Nairobi
Engraved Lagos skyline

Nigeria · West Africa

Lagos

Connected synthetic people, households and city systems.

Synthetic citizen records
26,387,378
Population-series span
1940–2026
Public sample catalogue
20 domains
Administrative units
20 LGAs
Explore Lagos

Synthetic citizen counts: 2 September 2026 snapshot. These are model records, not census populations. Coverage and periods vary by domain.

Start with the records.

Choose a synthetic citizen. Inspect dated records and their sources. Sample gaps do not establish an absence of real-world activity.