1. The ListEvery property on the UNESCO World Heritage List¹, inscribed since 1978 under the 1972 World Heritage Convention. Each site is Cultural, Natural or Mixed, and carries the criteria (i)–(x) it was inscribed under. Sites the World Heritage Committee has placed on the List of World Heritage in Danger are drawn in red, overriding their category color.

2. The GeoparksEvery UNESCO Global Geopark², a separate programme run since 2015 for territories whose geological heritage is managed together with education and sustainable development. They are not a World Heritage category, so they carry their own color, and the Danger list — a World Heritage instrument — never applies to them. Total sites displayed, across both programmes: —.

3. Geographic dataCoordinates come from the official UNESCO record for each property or geopark. Serial World Heritage properties — a single inscription made of several separate components, such as the 758 parts of the Frontiers of the Roman Empire — publish one point per component; those sites are placed on their main component. those components are clustered by distance and a site can receive several label points, but secondary clusters are kept only when they hold enough of its components. Every geopark publishes a single coordinate, so none of that applies to them. Points are colored by category, highlighting where cultural, natural and geological heritage concentrate.

4. Popularity and imagesName size and weight come from Wikipedia pageviews (human traffic only) over the last completed year. More-viewed sites appear earlier; zooming in reveals less-viewed ones. Photos come from the UNESCO photo gallery published with each property record — a whole gallery for a World Heritage property, a single photo for a geopark. Where a record has no photo, the site's Wikipedia lead image is used instead, credited to its author and licence.