The Library’s map collection contains over 1,000,000 sheets of maps, charts and plans as well as thousands of atlases. It is the largest map collection in Wales, and one of the largest in the British Isles. The collection contains a wide range of materials from the latest electronic mapping to 16th century maps and charts on vellum. The collection specialises in Welsh material but also has a large number of items covering the rest of the world.

You can view digital versions of some of the vast collection of maps held at the Library. These have been divided into different categories: