Attribution & Licences
Last updated 20 September 2026. Available in English only.
This site is built almost entirely on other people’s work — open data, open-source libraries, and freely licensed fonts. This page credits all of it and records the licence each piece is used under.
Heritage data
Information about World Heritage Sites — names, descriptions, categories,
inscription years, criteria, coordinates, and danger-listing status — comes
from the World Heritage List dataset published on
UNESCO’s open data portal
(dataset whc001), and is used with attribution to UNESCO.
Translations of site names and descriptions are UNESCO’s own, taken from the
same dataset.
Our copy is a periodic snapshot and will drift from the official record between imports. The authoritative source is always the UNESCO World Heritage List. We are not affiliated with UNESCO, and UNESCO does not endorse this site or vouch for how we present its data.
Images
Thumbnail images on site pages are hosted by Wikimedia and are linked from the corresponding Wikipedia article, which is also linked on the page. Wikimedia images are individually licensed — most under a Creative Commons licence or in the public domain — and the authoritative credit for each one is on its Wikimedia Commons file page, reachable through the linked article. If you are the rights holder of an image and want it credited differently or removed, tell us on the Copyright & Takedown page and we will act quickly.
Country flags are served by flagcdn.com.
Maps
Map tiles and the embedded map on site detail pages come from OpenStreetMap. Map data is © OpenStreetMap contributors, available under the Open Database Licence (ODbL), with the rendered tiles available under CC BY-SA 2.0.
Fonts
| Font | Used for | Licence |
|---|---|---|
| Fraunces | Display and headings | SIL Open Font Licence 1.1 |
| Public Sans | Body text | SIL Open Font Licence 1.1 |
| IBM Plex Mono | Numbers and data | SIL Open Font Licence 1.1 |
These fonts are served from this site rather than from a third-party font service, so loading a page does not disclose your IP address to a font host.
Front-end libraries
| Library | Used for | Licence |
|---|---|---|
| Bootstrap 5.3 | Layout and components | MIT |
| Bootstrap Icons 1.11 | Icons | MIT |
| three.js 0.169 | The 3D globe | MIT |
| Leaflet 1.9 | The 2D map | BSD 2-Clause |
| Chart.js 4.4 | Profile charts | MIT |
Server-side components
| Component | Used for | Licence |
|---|---|---|
| ASP.NET Core and Entity Framework Core | The application framework | MIT |
| Markdig | Rendering Markdown in comments and news posts | BSD 2-Clause |
| HtmlSanitizer | Stripping unsafe HTML from user content | MIT |
| CsvHelper | Data and translation import/export | MS-PL / Apache 2.0 |
| Resend .NET | Sending email | MIT |
| Anthropic SDK | AI assistance in the news editor | MIT |
Policy text
Our Terms of Service and Privacy Policy are adapted from Basecamp’s open-source policies under CC BY 4.0. The takedown procedure on our Copyright & Takedown page draws on GitHub’s site policies, released under CC0 1.0.
Something missing?
If you maintain something we use and we have credited it wrongly, or not at all, please tell us and we will fix this page.