Primary sources
European CommissionEurostatUN ComtradeWorld BankOECDUNESCO Institute for StatisticsUN TourismNational statistics offices
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B4A Data Hub · People & Places

Compare cities with official data

Eight city cards built only from official sources: what a ride costs, how long the days are, when the weather suits you, how many people visit and the facts most guides miss. Pick two cities and see them side by side on one map.

Cities so far: London, Dubai, New York, Paris, Madrid, Sydney, Toronto and Los Angeles. Every figure shows its publisher and period. Gaps are marked “Coming next”, never guessed.

Compare two citiesChoose any two cities and compare themInteractive map, the distance between them and where it is night right now

Pick a city tab or the Compare tab. The map shows both cities, the distance between them and where it is night right now. The comparison is factual: it shows the numbers side by side and never says which city is better.

The city cardsEight cities, one formatLondon, Dubai, New York, Paris, Madrid, Sydney, Toronto and Los Angeles
How we build it

Official sources, shown beside every number

We use statistics offices, city governments, transport authorities, tourism boards and airports. Anything we calculate ourselves is labelled “B4A calculation”. Where an official figure is not yet published we say so rather than estimate. The cards are for general information, not travel, legal, tax or financial advice.

Read the data sources and disclaimer

For tourism boards and city partners

Put your city on a card people play with

Cards are built from official data, refreshed as new figures come out, and shared as short videos across the B4A Data & AI Playground channels. A presenting partner gets the top slot and its events listed first.

Talk to us about partnering

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