The museum possesses a rich photographic archive and a library with many rare publications, the latter of which is constantly enriched to meet the needs of the research staff. There are also modern conservation laboratories for metal, pottery, stone and organic materials, a cast workshop, a photographic laboratory and a chemistry laboratory. The museum has temporary exhibition spaces, a lecture hall for archaeological lectures and one of the largest shops of the Archaeological Receipts Fund.

The National Archaeological Museum welcomes thousands of visitors each year. Besides displaying its own treasures, it organizes temporary exhibitions and lends artefacts to exhibitions both in Greece and abroad. It also functions as a research center for scientists and scholars from around the world and participates in special educational and other programs. An important feature is the availability of guided visits for people with hearing impediments. The Museum functions as a Special Regional Service of the Ministry of Culture and its five permanent collections are administered autonomously.