Ptolemaic maps are cartographic representations based on the work of the ancient Greek astronomer and geographer Claudius Ptolemy. Created in the 2nd century AD, these maps were among the first to use a systematic approach to geography, incorporating a grid system of latitude and longitude. Ptolemy's maps aimed to accurately depict the known world, primarily focusing on the Mediterranean region and surrounding areas. These maps were influential during the Renaissance, as they provided a foundation for later cartographers. Ptolemy's work was rediscovered in the 15th century, leading to a revival of interest in classical geography and the development of more accurate maps in the following centuries.