There are about 1,000 geographical, ethnographic, military, administrative, frontier-line, political, road and sea-routes maps in the Collection, as well as plans of the urban tissue and street network of towns and cities.

Outstanding on account of their rarity are the set of maps drawn by the French Scientific Expedition to the Morea (Peloponnese) under Nicolas Joseph Maison (1829-1838), as well as the English, French and German campaign maps of the Second World War.

The maps are acquired mainly by donations, such as those from Field Marshall Petros Lykoudis, the Association for the Dissemination of Greek Letters and the Ministry of Education.

The first map was gifted at the end of the nineteenth century and is a geographical map of the island of Hydra.