> For the complete documentation index, see [llms.txt](https://help.felt.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.felt.com/data-sources/global-library.md).
# Global Library
The **Global Library** is a data source that every Felt workspace has access to, pre-populated with a catalog of curated datasets maintained by Felt. It's the same collection of layers you'll find at [felt.com/explore](https://felt.com/explore), exposed directly in your workspace alongside your own data sources.
## What's in it
The Global Library is organized by topic, with coverage that spans:
* **Administrative boundaries** — countries, states and provinces, counties, municipalities, neighborhoods, census geographies.
* **Demographics** — population, housing, and economic indicators at common census geographies.
* **Environment and land cover** — elevation, land cover, hydrology, protected areas.
* **Imagery and basemaps** — aerial imagery, satellite mosaics, reference basemaps.
* **Transportation and infrastructure** — roads, transit, points of interest.
## Adding a Global Library layer to a map
1. Open the in-map library with  or open the Global Library tab from the workspace homepage.
2. Browse by topic or search within the Global Library.
3. Click a layer to preview it.
4. From the preview panel, click **Add to map**.
A **copy** of the layer is placed on your map. You can restyle, filter, or edit it freely — changes don't flow back to the catalog.
## Attribution
Many Global Library datasets come from third parties and carry their own attribution requirements. See the [attribution policy](/terms-and-policy/attribution-policy.md) for details.
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