On the discovery of the Royal Tombs of Vergina (Aigai) in 1977, an immediate programme was launched to preserve the magnificent murals which adorned them. At the same time a conservation laboratory was set up on the spot to save and restore the extremely important portable objects they contained. For the preservation of the Royal Tombs themselves a subterranean structure was built in 1993 to encase and protect the ancient monuments by maintaining a constant temperature and humidity, both indispensable for the preservation of the wall paintings.

Externally the structure has the appearance of an earth mound; inside it are the treasures found in the Royal Tombs, which have been on exhibition since November 1997.