Find a city with a larger built-up area.
Test your knowledge of City built-up area in a Peakle trivia climb. Each answer must be higher than the last, using km² as the scale.
Play City built-up areaUnderstand the measure
Peakle turns City built-up area from a one-off fact question into a progressive comparison challenge. This route measures developed urban land rather than administrative territory, making the comparison closer to the visible footprint of a city. You can begin with any valid answer, then keep choosing a larger item on the published scale; familiar and surprising entries together test how well you understand the category.
This route uses km² as its comparison scale and keeps the 2025 UN DESA · World Urbanization Prospects 2025 dataset visible so the rules can be checked. Built-up area describes developed land detected or classified as urban by the source. It can be smaller than a municipality and different from a continuous metropolitan region. Values are shown at the precision used by the source, so the goal is to compare published records consistently rather than guess at extra decimals.
A reliable approach is to choose a comfortable starting point, reserve obvious high-value answers for later, and watch for near-ties. Use urban sprawl and settlement continuity as clues. A city with a broad administrative boundary is not automatically the one with the largest built-up footprint. If two candidates seem close, use the displayed value and source definition instead of relying on memory; one invalid step ends the climb, but every run teaches you more about the shape of the dataset.
The route
Pick an item from the answer bank to set your starting point.
Every next answer must be larger than the one before it on the published scale.
One wrong, repeated, or equal answer ends the climb and records your score.
Evidence behind the climb
This route uses UN DESA · World Urbanization Prospects 2025 data from 2025. The question asks you to compare City built-up area using the published values.
Before you climb
Choose an answer, then keep choosing a larger value measured in km². The goal is to build the longest valid chain you can.
This route uses km² as its comparison scale and keeps the 2025 UN DESA · World Urbanization Prospects 2025 dataset visible so the rules can be checked. Built-up area describes developed land detected or classified as urban by the source. It can be smaller than a municipality and different from a continuous metropolitan region. Values are shown at the precision used by the source, so the goal is to compare published records consistently rather than guess at extra decimals.
This route is based on UN DESA · World Urbanization Prospects 2025 data from 2025, using the City built-up area indicator. Use the source link on the page to inspect the original dataset.
Why is built-up area useful? It helps compare the land that is actually developed, instead of treating every part of a municipality as equally urban.
This category page is available in English and Chinese.