Established in 1983, the purpose of the Centre of Thessaloniki History is the collection, classification and maintenance of all sources concerned with and referring to the history and cultural identity of Thessaloniki. Among the exhibits within are private archives, photography and map collections and a collection of postcards depicting Thessaloniki in the beginning of the 20th century.
Small note on cache maintenance: I regularly visit Greece but in the meantime a local geocacher has kindly offered to assist if any issues arise between my trips.