"Camden's Britannia" is a comprehensive geographical and historical work written by the English antiquarian William Camden in 1586. The book provides detailed descriptions of the counties of England, Wales, and parts of Scotland, highlighting their history, culture, and notable landmarks. It is considered one of the first modern works of geography in England. The text is significant for its use of maps and illustrations, which helped readers visualize the regions discussed. Camden's meticulous research and attention to detail laid the groundwork for future geographical studies and contributed to the understanding of British history and heritage.