Crete's archaeological collections grew from nineteenth-century efforts to protect antiquities during the final decades of Ottoman rule. The local Society of Friends of Education established an early collection in Heraklion in 1883, and discoveries accelerated after the autonomous Cretan State was formed in 1898. Excavations at Knossos, Phaistos, Malia, Zakros, and many smaller sites produced architecture, pottery, seals, sculpture, metalwork, inscriptions, and fresco fragments spanning millennia. A first purpose-built museum opened in the early twentieth century but was soon inadequate for the volume and importance of the material.

Earthquakes damaged that earlier building, which was demolished to make way for a modern museum designed by architect Patroklos Karantinos. Construction began in the 1930s, paused during the Second World War, and continued into the 1950s. Karantinos used reinforced concrete, simple volumes, controlled daylight, and flexible galleries suited to archaeological display. The result was a purpose-built modernist institution rather than a converted palace or reconstructed Minoan building. Its historical importance now includes both the ancient collection and the twentieth-century architecture created to organize a new national account of Cretan civilization.

The museum is especially renowned for Minoan material, including Kamares pottery, carved sealstones, ritual vessels, bronze figurines, the Phaistos Disc, bull-leaping imagery, and finds from palace and settlement excavations. Displays also follow Crete through Neolithic, Geometric, Archaic, Classical, Hellenistic, and Roman periods, preventing the island's history from ending with the Bronze Age. Many objects are original excavated artifacts, but their archaeological contexts were disrupted by early methods, ancient reuse, looting, and dispersal among institutions. Labels and scholarly interpretation can change as dating, function, and cultural terminology are reconsidered.

Minoan wall paintings require particular care. Excavators often recovered thousands of fallen plaster fragments rather than intact murals. Conservators joined original fragments, stabilized pigment, and sometimes filled missing areas or mounted them within extensive painted reconstructions so viewers could understand proposed compositions. Famous images therefore vary in how much ancient surface they contain and how much reflects twentieth-century restoration. The museum itself underwent a major structural and gallery renovation in the early twenty-first century, reopening fully in 2014 with renewed services, seismic protection, cases, circulation, and displays while conserving Karantinos's architectural character.

The Hellenic Ministry of Culture operates the Heraklion Archaeological Museum as a ticketed public institution, with hours, combination tickets, and gallery access subject to current policy. Its central value is the close relationship between objects and the Cretan sites from which they came, especially Knossos and other Minoan centers. Responsible viewing distinguishes excavated artifact from modern support, assembled fragment from conjectural infill, and ancient image from the museum's evolving narrative. The building and exhibitions are not neutral containers: they record changing conservation techniques, national priorities, archaeological debate, and the continuing task of presenting fragile material removed from its original setting.